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1906

No. 25, Isotherms for Months of year

National Atlas

Department of Interior : Isotherms for M …

1906

No. 26, Isotherms for Summer. Isotherms …

National Atlas

Isotherms for Summer. Isotherms for Year …

1906

No. 26 A, Average possible hours of suns …

National Atlas

Department of Interior : Average possibl …