Search Results for the EPA National Library Catalog

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Your Search: (AUTHOR=Groot AND Johan AND J.)

 
 
 

Select Item Title Year Published
Ages of the Bethany, Beaverdam, and Omar formations of southern Delaware 1990
Geology of the Milford and Mispillion River quadrangles / by Kelvin W. Ramsey; with a contribution on Palynology by Johan J. Groot. 1997
Geology of the Seaford area, Delaware 1996
Ground-water availability in southern New Castle County, Delaware 1983
Plant microfossils of the Calvert Formation of Delaware 1992
Saturated thickness of the Columbia Formation in southern New Castle County, Delaware 1983
Saturated thickness of the water-table aquifer in southern New Castle County, Delaware 1983

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