Refractory clay deposits of south-central Colorado : a description of the refractory and semirefractory clays in the Purgatoire formation and Dakota sandstone /
| Main Author: | |
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| Format: | Government Document eBook |
| Language: | English |
| Published: |
[Washington, D.C.] :
United States Department of the Interior, Geological Survey,
1953.
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| Series: | Geological Survey bulletin ;
993. |
| Subjects: | |
| Online Access: | https://purl.fdlp.gov/GPO/gpo65179 |
| Item Description: | Title from title screen (viewed July 21, 2014). |
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| Physical Description: | 1 online resource (vi, 104 pages, 5 pages of plates) : illustrations. |
| Bibliography: | Includes bibliographical references and index. |