TY - SER TI - Geology, principles and processes KW - Physical geology N1 - This is an Book reviews of Geology, principles and processes. By William H. Emmons, George A. Thiel, Clinton R. Stauffer and Ira S. Allison. Pp. vi + 638 pp., 519 figs. 4th edition, McGraw Hill, 1955 ER -