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Wilhelm
From the Conclusions ... 'Prior to becoming a national park, Shenandoah had gone through periods of indiscriminate logging, hunting, livestock grazing, and burning. Then the area entered the National Park System and shifted abruptly to a regime of…
Type: Document
Year: 1973

Mangelsdorf, MacNeish, Galinat
[no description entered]
Type: Document
Year: 1956

Mangelsdorf, Lister
[no description entered]
Type: Document
Year: 1956

Galinat, Mangelsdorf, Pierson
[no description entered]
Type: Document
Year: 1956

Stewart
From the text...'The unrestricted burning of vegetation appears to be a universal culture trait among historic primitive peoples and therefore was probably employed by our remote ancestors. Archeology indicates that extensive areas of the Old and…
Type: Document
Year: 1956