Factors related to the water-yielding potential of rocks in the Piedmont and Valley and Ridge provinces of Pennsylvania /
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| Corporate Author: | |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Reston, Va. :
U.S. Dept. of the Interior, U.S. Geological Survey ;
[1990]
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| Series: | Water-resources investigations report ;
90-4174. |
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| Item Description: | Shipping list number: 91-218-P. |
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| Physical Description: | v, 52 pages : illustrations, map ; 28 cm. |
| Bibliography: | Includes bibliographical references. |