1. X-ray evidence of the nature of carbonate-apatite [abs.];Altschuler;Bull. Geol. Soc. Am.,1952
2. Geochemistry of uranium in apatite and phosphorite;Altschuler;U.S. Geol. Surv. Prof. Paper,1958
3. Limits of the natural environment in terms of pH and oxidation-reduction potentials;Baas Becking;J. Geol.,1960
4. Stratigraphic sections of the Phosphoria formation in Utah, 1949-51;Cheney;U.S. Geol. Surv. Circ.,1953
5. Stratigraphic sections of the Phosphoria formation in Montana, 1949-50, pt. 1;Cressman;U.S. Geol. Surv. Circ.,1953