DGS Publications

Title Authors Publication Date
RI55 Geology of the Milford and Mispillion River Quadrangles Ramsey, K.W., Groot, J.J.
RI50 Plant Microfossils of the Calvert Formation of Delaware Groot, J.J.
RI47 Ages of the Bethany, Beaverdam, and Omar Formations of Southern Delaware Groot, J.J., Ramsey, K.W., Wehmiller, J.F.