Biblio

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Douglass, AE. 1914. “A Method Of Estimating Rainfall By The Growth Of Trees”. Bulletin Of The American Geographic Society XLVI. Bulletin Of The American Geographic Society.
PDF icon Douglass, AE_A Method of Estimating Rainfall by the Growth of Trees_1914.pdf (14.44 MB)
Douglass, AE. 1931. “Trees And Droughts In Arizona”. Professional Engineer. Professional Engineer.
PDF icon Douglass, AE_Evidence of Climatic Effects in the Annual Rings of Trees_1920.pdf (11.8 MB)