File:Climatic Cycles and Tree-Growth Fig 36.jpg

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English: Fig. 36.—Double sunspot period in tree-growth at inner fjords of Norway; lower curve a 22.8 year cycle.
Date
Source Climatic Cycles and Tree-Growth
Author Andrew Ellicott Douglass

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Date/TimeThumbnailDimensionsUserComment
current18:57, 10 August 2012Thumbnail for version as of 18:57, 10 August 20121,204 × 296 (36 KB)Keith Edkins== {{int:filedesc}} == {{Information |Description={{en|1=Fig. 36.—Double sunspot period in tree-growth at inner fjords of Norway; lower curve a 22.8 year cycle.}} |date=1919 |Source=''Climatic Cycles and Tree-Growth'' |Author=Andrew Ellicott Douglass...