Upper Paleozoic floral zones and floral provinces of the United States /
| Main Author: | |
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
U.S. Govt. Print. Off,
1964.
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| Series: | Professional paper (Geological Survey (U.S.)) ;
454-K. Shorter contributions to general geology. |
| Subjects: |
| Physical Description: | 35 pages : 19 plates ; 29 cm. |
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| Bibliography: | Includes bibliographical references and index. |