TY - BOOK AU - Holt, Elmer C. CN - TN816 CN - TN816 CY - Washington : CY - Springfield, Va. DA - 1977. ID - 10688 KW - Coal KW - Coal washing. N1 - "EPA-600/977-017." PB - Environmental Protection Agency, Office of Research and Development, Office of Energy, Minerals and Industry ; PB - available through the National Technical Information Service, PP - Washington : PP - Springfield, Va. PY - 1977. T1 - Coal cleaning with scrubbing for sulfur control :an engineering economic summary / TI - Coal cleaning with scrubbing for sulfur control :an engineering economic summary / ER -