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| Titel : | Middle-Upper Cambrian Transition Fauns of North America / B.F. Howell - Donald Duncan
| | Hauptautor : |  Howell, Benjamin Franklin
| | Subsequent responsibility : | Duncan, Donald
| | Umfang : | S.1-11, : 1 Pl.
| | UDC : | 56
| | In : | Bulletin of the Wagner Free Institute of Science. -- 1939, Vol. 14, No. 1.
| | Note : | 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.
| | Kl.slova : | Albansia - Arapahoia - Deissella - Homagnostus - Micragraulos - Piedmontia - Perioura |
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