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PDF icon Douglass, AE_Evidence of Climatic Effects in the Annual Rings of Trees_1920.pdf (11.8 MB)
Douglass, AE. 1933. “Evidences Of Cycles In Tree Ring Records”. Proceedings Of The National Academy Of The Sciences. Proceedings Of The National Academy Of The Sciences.
PDF icon Douglass, AE_Evidences of Cycles in Tree RIng Records_1933.pdf (11.71 MB)