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Displaying 1-2 of 2 results for author "Scharlach, Richard A."
Geologic and hydrologic data collected at test holes NC-1 and NC- 3, Guaynabo and San Juan, eastern Puerto Rico [microform] / by Jesús Rodríguez-Martínez, Richard A. Scharlach, and Arturo Torres-González ; prepared in cooperation with the Puerto Rico Department of Natural Resources.
- Text
- San Juan, P.R. : U.S. Geological Survey ; Denver, CO : Books and Open-File Reports Section [distributor], 1991.
- 1991
Geologic and hydrologic data collected at test hole NC-8, Vega Alta, Puerto Rico [microform] / by Jesús Rodríguez-Martínez and Richard A. Scharlach ; prepared in cooperation with the Puerto Rico Department of Natural Resources.
- Text
- San Juan, P.R. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : Earth Science Information Center, Open-File Reports Section [distributor], 1994.
- 1994
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