J. Pittman

Silica in Edwards Limestone, Travis County, Texas

J. Pittman, 1959 .

Length-slow Chalcedony after Sulphate Evaporite Minerals in Sedimentary Rocks

R. Folk, J. Pittman, 1971 .

Length-slow Chalcedony: A New Testament for Vanished Evaporites

R. Folk, J. Pittman, 1971 .

Two Theories of Deposition of Oficina Formation, Eastern Venezuela: GEOLOGICAL NOTES

R. Passega, J. Pittman, L. Barnes, 1958 .