Climatic change considered as the major factor in the abandonment of the Grand Canyon region /
| Main Author: | |
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| Format: | Thesis Book |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1978.
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| Subjects: |
| Physical Description: | iv, 51 pages : maps |
|---|---|
| Bibliography: | Bibliography: leaves 42-46. |