TY - BOOK AU - Tourtelot,Harry A. ED - United States TI - Hydraulic equivalence of grains of quartz and heavier minerals, and implications for the study of placers U1 - 551.353 PY - 1968///. CY - Washington: PB - United States Government Printing Office, KW - Sediments (Geology) KW - Placer deposits N1 - Includes bibliographical references (p. F12-F13) ER -