DGS Publications

Title Authors Publication Date
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.
OFR13 Delaware's Extractive Mineral Industry Doyle, R.G., Pickett, T.E.
B7 Engineering Materials of Northern New Castle County Ward, R.F., Groot, J.J.