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Dave Thayer
2 cilt bulundu.
Cilt sonuçları
An introduction to Grand Canyon fossils
Dave Thayer · Grand Canyon Association
Sayfa sayısı yok · 2009
Fossils / Paleontology / Stratigraphic Geology / Geology / Paleontology, united states
A guide to Grand Canyon geology along Bright Angel Trail
Dave Thayer · Grand Canyon Natural History Association
66 sayfa · 1986
Guidebooks / Geology / Grand canyon (ariz.)