Gill, James R. (James Rogers), 1922-1972.
Gill, James R. (James Rogers), 1922-1972.
Merewether, E. A. (Edward Allen), 1930-
Cobban, William Aubrey, 1916-
Stratigraphy and nomenclature of some Upper Cretaceous and lower Tertiary rocks in south-central Wyoming,
Stratigraphy and nomenclature of some Upper Cretaceous and lower Tertiary rocks in south-central Wyoming,
Stratigraphy and nomenclature of some Upper Cretaceous and lower Tertiary rocks in south-central Wyoming,
Gill, James R. (James Rogers), 1922-1972.