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       Author [U.S. Geological Survey, Alpha, Tau Rho] Full Title Physiographic Diagrams of Mount St. Helens, Washington, Showing Changes in its Summit Crater, Summer 1982. March 25, April 9, 1982. Publisher U.S. Geological Survey Author [U.S. Geological Survey, Alpha, Tau Rho] Full Title Physiographic Diagrams of Mount St. Helens, Washington, Showing Changes in its Summit Crater, Summer 1982. May 21, July 1, August 24, 1982. Publisher U.S. Geological Survey Author [U.S. Geological Survey, Alpha, Tau Rho] Full Title Physiographic Diagrams of Mount St. Helens, Washington, Showing Changes in its Summit Crater, Summer 1982. July 1, 1982. Publisher U.S. Geological Survey Author [U.S. Geological Survey, Bailey, Roy A., Alpha, Tau Rho, Lojoie, Kenneth R., Clark, Malcolm M.] Full Title Physiographic Diagrams of Long Valley, Mono and Inyo Counties, California. Publisher U.S. Geological Survey Author [U.S. Geological Survey, Bailey, Roy A., Alpha, Tau Rho, Lojoie, Kenneth R., Clark, Malcolm M.] Full Title Physiographic Diagrams of Long Valley, Mono and Inyo Counties, California. - Continued. Publisher U.S. Geological Survey 
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