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| DOUGLASS PLATE 4 | |
| A | 
|
| B | 
|
A. Section of Scotch pine from Ös, Norway.
B. Section of Scotch pine from Dalarne, Sweden.
Page:Climatic Cycles and Tree-Growth - 1919.djvu/47
| DOUGLASS PLATE 4 | |
| A |
|
| B |
|
A. Section of Scotch pine from Ös, Norway.
B. Section of Scotch pine from Dalarne, Sweden.