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56 Šn/480-sep.
HOWELL, Benjamin Franklin
Middle-Upper Cambrian Transition Fauns of North America / B.F. Howell - Donald Duncan. -- S.1-11, : 1 Pl. -- In: Bulletin of the Wagner Free Institute of Science. -- 1939, Vol. 14, No. 1. -- separát. -- bibl.. -- Citováno jako: HOWELL, B.F. - DUNCAN, Donald Middle-Upper Cambrian Transition Faunas...Bull. Wagner Free Inst. Sci. 1939, Vol. 14, No. 1, S.1-11, 1 Pl.
Albansia
Arapahoia
Deissella
Homagnostus
Micragraulos
Piedmontia
Perioura
56
63394
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