Biblio
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. 1999. “Tree-Ring Reconstruction Of Western Spruce Budworm Outbreaks In The Rio Grande National Forest, Colorado”. School Of Renewable Natural Resources. School Of Renewable Natural Resources. Tucson: University of Arizona.
Ryerson, Daniel Eric_Tree-Ring Reconstruction of Western Spruce Budworm Outbreaks in the Rio Grande National Forest, Colorado_1999.pdf (5.59 MB)