N/A. English: Fig. 35.—Early curve of Arizona pines from 1700 to 1900 A. D. (No. 4), compared with double and triple sunspot cycles combined (No. 3). 1919. Andrew Ellicott Douglass 353 Climatic Cycles and Tree-Growth Fig 35

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Keywords: ., /, /., 1919., andrew, douglass., ellicott