1. Isla de Vieques : Puerto Rico 1:50,000 [1996]
4. National energy resource issues : geologic perspective and the role of geologic information [1988]
8. State of Pennsylvania [map] [1977]
9. State of Pennsylvania [map] [1977]
10. United States Geological Survey annual report [1975 - 1976]
12. State of Illinois [cartographic material] [1972 - 1970]
Articles+
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