Geochemistry and Stratigraphic Relations of Middle Proterozoic Rocks of the New Jersey Highlands: Issue 1565

Geochemistry and Stratigraphic Relations of Middle Proterozoic Rocks of the New Jersey Highlands: Issue 1565, Part 3

The Martinsburg Formation (Middle and Upper Ordovician) in the Delaware Valley, Pennsylvania-New Jersey: Issue 1244

The Lyon Station-Paulins Kill Nappe: The Frontal Structure of the Musconetcong Nappe System in Eastern Pennsylvania and New Jersey

Economic Geology of the Idaho Springs District, Clear Creek and Gilpin Counties, Colorado

Stratigraphic Notes, 1993

Stratigraphic Notes, 1993

Economic Geology of the Central City District, Gilpin County, Colorado

Economic Geology of the Idaho Springs District, Clear Creek and Gilpin Counties, Colorado: Issues 1204-1209