The flora of the Ripley formation.
| Main Author: | |
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
U.S. Govt. Print. Off,
1925.
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| Series: | U.S. Geological survey. Professional paper 136
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| Subjects: |
| Item Description: | At head of title: Department of the Interior. |
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| Physical Description: | iii, 94 pages : illustrations XXIIIpl., tables. ; 29 cm. |
| Bibliography: | Includes bibliographical references. |