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| DOUGLASSPLATE 1 | |
| A | 
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| B | 
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A. Bottomless pits near Flagstaff, illustrating drainage through limestone.
B. Yellow pine forest of northern Arizona.
Page:Climatic Cycles and Tree-Growth - 1919.djvu/17
| DOUGLASSPLATE 1 | |
| A |
|
| B |
|
A. Bottomless pits near Flagstaff, illustrating drainage through limestone.
B. Yellow pine forest of northern Arizona.