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.
B3 Marine Upper Cretaceous Formations of the Chesapeake and Delaware Canal Organist, D.M., Richards, H.G., Groot, J.J.