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Characteristic lower Cretaceous megafossils from northern Alaska / by Ralph W. Imlay.

by Imlay, Ralph Willard, 1908-1989.

Material type: book Book Publisher: Washington : United States Government Printing Office, 1961Availability: Items available for loan: Biblioteca Aranzadi [Call number: 551.763(798) IML] (1).
Early Cretaceous (Albian) Ammonites from the Chitina valley and Talkeetna Mountains, Alaska / by Ralph W. Imlay.

by Imlay, Ralph Willard, 1908-1989.

Material type: book Book Publisher: Washington : United States Government Printing Office, 1960Availability: Items available for loan: Biblioteca Aranzadi [Call number: 564.53(798) IML] (1).
Jurassic (Bathonian or early Callovian) Ammonites from Alaska and Montana / by Ralph W. Imlay.

by Imlay, Ralph Willard, 1908-1989.

Material type: book Book Publisher: Washington : United States Government Printing Office, 1962Availability: Items available for loan: Biblioteca Aranzadi [Call number: 564.53(786+798) IML] (1).
Late Bajocian ammonites from the cook Inlet region, Alaska / by Ralph W. Imlay.

by Imlay, Ralph Willard, 1908-1989.

Material type: book Book Publisher: Washington : United States Government Printing Office, 1962Availability: Items available for loan: Biblioteca Aranzadi [Call number: 564.53(798) IML] (1).
Middle bajocian ammonites from the cook inlet region Alaska / by Ralph W. Imlay.

by Imlay, Ralph Willard, 1908-1989.

Material type: book Book Publisher: Washington : United States Government Printing Office, 1964Availability: Items available for loan: Biblioteca Aranzadi [Call number: 564.53(798) IML] (1).
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