R. Gulbrandsen

Chemical composition of phosphorites of the Phosphoria Formation

R. Gulbrandsen, 1966 .

Analcime and Albite in Altered Jurassic Tuff in Idaho and Wyoming

E. R. Cressman, R. Gulbrandsen, 1960, The Journal of Geology.

Glauconite from the Precambrian Belt Series, Montana

H. H. Thomas, S. S. Goldich, R. Gulbrandsen, 1963, Science.

Geology of the Dry Valley Quadrangle, Idaho

E. R. Cressman, R. Gulbrandsen, 1955 .

Petrology of the Meade Peak phosphatic shale member of the Phosphoria formation at Coal Canyon, Wyoming; A method of X-ray analysis for determining the ratio of calcite to dolomite in mineral mixtures

R. Gulbrandsen, 1960 .