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Description: |
137 leaves (some folded) : illustrations, map ; 29 cm |
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General Note: |
Best quality possible - copied from microfilm. |
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Dissertation Note: |
Thesis (Ph. D.) Iowa State College 1943 |
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Bibliography Note: |
Includes bibliographical references. |
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Dissertation Note: |
Thesis submitted to the Graduate Faculty for the Degree of Doctor of Philosophy Major Subject Economic Zoology. |