1.
A Hydrologic excursion to Puerto Rico's southern plain [microform] / field leaders, R.A. Renken ... [et al.].
Renken, Robert A.; Geological Survey (U.S.)
Doraville, Ga. : U.S. Geological Survey ; Denver, CO : Books and Open-File Reports [distributor], 1990.
I 19.76: 90-365 | Available at Government Documents Microfiche |
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2.
Geology and hydrogeology of the Caribbean islands aquifer system of the Commonwealth of Puerto Rico and the U.S. Virgin Islands / by Robert A. Re[...]
Renken, Robert A.
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2002.
GB1055 .G46 2002 | Map It | View e-resource | Available Online | Available at General Collection |
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