Rogers, Austin F; Kerr, Paul F. (1942). Optical mineralogy /by Austin F. Rogers and Paul F. Kerr. New York :: McGraw-Hill,.
Rogers, Austin F; Kerr, Paul F. Optical mineralogy /by Austin F. Rogers and Paul F. Kerr. New York :: McGraw-Hill,, 1942
Rogers, Austin F; Kerr, Paul F. Optical mineralogy /by Austin F. Rogers and Paul F. Kerr. New York :: McGraw-Hill,, 1942.