cam a22 u 4500 12860090X CHVBK 20200921055854.0 880212s1978 xxu |b 00 |eng|d PB-80-134646 BUMINES-OFR-6-80 (OCoLC)638488981 (NEBIS)000229907 ETH-BIB ger ETH-BIB ETHICS-ISBD Study of underground coal mine waste disposal requirements in the United States Mikroform contract research report, September 1977 - September 1978 by Walter W. Kaufman, John R. Williams ; prep.: Skelly & Loy, Harrisburg, Pa Springfield, Va. 1978 3 Microfiches ABFALLABLAGERUNG + ABFALLDEPONIEN ger (ETHUDK)000030380 ethudk u ABFALLABLAGERUNG + ABFALLDEPONIEN ger 628.472 nebis E1 u WASTE TIPPING + WASTE DISPOSAL SITES eng 628.472 nebis E1 u DÉPOSITION DES DÉCHETS + DÉPÔTS DES DÉCHETS fre 628.472 nebis E1 Kaufman Walter W. BK020000 XK020000 XK020000 1 MF Mikrofiche = Microfiche NEBIS E01 E01 RP MIKR: PB80/134646 NEBIS 700 1- Kaufman Walter W.