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        Section along 36th parallel from the Rio Grande to the Canadian Plains. Atlas sheets 69 D and 70 C. Julius Bien, lith. (1881) 
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        U.S. 
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        Section along 37th parallel from the Rio Grande to San Isidro Creek. Atlas sheets 69 B & 70 A. Julius Bien, lith. (1881) 
      Publisher 
        U.S. 
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        Primordial period. H.M. Martin del. J. Bien lith. (1877) 
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        U.S. 
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        Primordial period. H.M. Martin del. J. Bien lith. (1877) 
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        U.S. 
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        Canadian period. H.M. Martin del. J. Bien lith. (1877) 
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        U.S. 
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        Trenton period. H.M. Martin del. J. Bien lith. (1877) 
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        U.S. 
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        Subcarboniferous period. H.M. Martin del. J. Bien lith. (1877) 
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        U.S. 
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        Carboniferous. H.M. Martin del. J. Bien lith. (1877) 
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        U.S. 
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        Carboniferous. H.M. Martin del. J. Bien lith. (1877) 
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        U.S. 
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        Carboniferous. H.M. Martin del. J. Bien lith. (1877) 
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        U.S. 
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        Carboniferous. H.M. Martin del. J. Bien lith. (1877) 
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        U.S. 
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        Carboniferous. H.M. Martin del. J. Bien lith. (1877) 
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        U.S. 
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        Carboniferous. H.M. Martin del. J. Bien lith. (1877) 
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        U.S. 
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        Carboniferous. H.M. Martin del. J. Bien lith. (1877) 
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        U.S. 
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        Jurassic & Cretaceous. C.K. Worthen del. J. Bien lith. (1877) 
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        U.S. 
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        Cretaceous. C.K. Worthen del. J. Bien lith. (1877) 
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        U.S. 
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        Cretaceous. C.K. Worthen del. J. Bien lith. (1877) 
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        U.S. 
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        Cretaceous. C.K. Worthen del. J. Bien lith. (1877) 
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        U.S. 
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        Cretaceous. C.K. Worthen del. J. Bien lith. (1877) 
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        U.S. 
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        Cretaceous. C.K. Worthen & H.M. Martin del. J. Bien lith. (1877) 
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        U.S. 
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        Cretaceous. Martin, Worthen & Roetter del. J. Bien lith. (1877) 
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        U.S. 
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        Cretaceous. P. Roetter del. J. Bien lith. (1877) 
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        U.S. 
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        Tertiary & Tertiary? C.K. Worthen del. J. Bien lith. (1877) 
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        U.S. 
      Author 
        Sprague, Isaac 
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        Canotia holacantha. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Sprague, Isaac 
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        A. Parryella filifolia. B. Petalostemon tenuifolius. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Sprague, Isaac 
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        A. Horkelia purpurascens. B. Potentilla wheeleri. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Seaman, W. H. 
      Full Title 
        Figs. 1-5. Petalonyx nitidus. Figs. 6-10. Viguiera reticulata. W.H. Seaman, del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Sprague, Isaac 
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        Brickellia longifolia. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
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        U.S. 
      Author 
        Seaman, W. H. 
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        Aplopappus cervinus. W.H. Seaman del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Sprague, Isaac 
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        A. Townsendia rothrockii. B. Aster coloradoensis. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
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        U.S. 
      Author 
        Sprague, Isaac 
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        Actinomeris wrightii. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
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        U.S. 
      Author 
        Sprague, Isaac 
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        Wyethia arizonica. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
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        U.S. 
      Author 
        Sprague, Isaac 
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        Hemizonia wheeleri. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Seaman, W. H. 
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        Figs. 3-4 Laphamia megalocephala. W.H. Seaman del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Sprague, Isaac 
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        Leucampyx newberryi. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
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        U.S. 
      Author 
        Sprague, Isaac 
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        Artemisia rothrockii. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
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        U.S. 
      Author 
        Sprague, Isaac 
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        Pyrrhopappus rothrockii. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
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        U.S. 
      Author 
        Sprague, Isaac 
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        Figs. 1-2. Chaetadelpha wheeleri. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Sprague, Isaac 
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        Palmerella deblis var. serrata. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
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        U.S. 
      Author 
        Sprague, Isaac 
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        Hedeoma hyssopieolia. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
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        U.S. 
      Author 
        Sprague, Isaac 
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        Nama rothrockii. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Sprague, Isaac 
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        A. Gilia debilis. B. Gilia demissa. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Seaman, W. H. 
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        Convolvulus longipes. W.H. Seaman del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Sprague, Isaac 
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        Halenia rothrockii. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
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        U.S. 
      Author 
        Sprague, Isaac 
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        Fraxinus coriacea. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Seaman, W. H. 
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        Abronia villosa. W.H. Seaman del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Sprague, Isaac 
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        Artiplex wolfii (i.e. Atriplex wolfii). Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Sprague, Isaac 
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        Urtica breweri. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
      Author 
        Sprague, Isaac 
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        Sisyrhinchium arizonicum. Sprague del. U.S. Geographical Surveys West of the 100th Meridian. (1878) 
      Publisher 
        U.S. 
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