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Willard Hall Parsons
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Field guide, Middle Rockies and Yellowstone
Willard Hall Parsons · Kendall/Hunt Pub. Co.
233 sayfa · 1978
Geology / Guidebooks / Geologie / Führer / Rocky mountains, description and travel
Guidebook, structures and origin of volcanic rocks, Montana-Wyoming-Idaho
Willard Hall Parsons · Wayne State University
48 sayfa · 1963
Igneous rocks / Volcanoes / Volcanic ash, tuff / Geology / Guidebooks