The development of geological studies in the Grand Canyon /
| Auteur principal: | |
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| Collectivités auteurs: | , |
| Format: | Actes de congrès Livre |
| Langue: | English |
| Publié: |
Philadelphia :
Department of Malacology, Academy of Natural Sciences of Philadelphia,
1989.
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| Collection: | Tryonia ;
no. 17. |
| Sujets: |