TY - BOOK ED - U.S. Department of the Interior ED - Bureau of mines TI - Minerals Yearbook SN - 0160420288 PY - 1990///- CY - Washington PB - U.S. Department of the Interior KW - Mineral Industries KW - mines and mineral resources KW - abrasive materials N1 - Volume 1 (1990, 1285 p.) ER -