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b d webby
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Cilt sonuçları
Fossil collections of the world
B. D. Webby · International Palaeontological Association
216 sayfa · 1989
Catalogs and collections / Directories / Fossils / Trace fossils
The Ordovician system of the East European Platform and Tuva (southeastern Russia)
B. D. Webby, Reuben James Ross · International Union of Geological Sciences
52 sayfa · 1994
Stratigraphic Geology / Stratigraphic correlation / Geology