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- [4] CHARACTERIZATION OF NITROGEN-COMPOUNDS IN TAR PRODUCED FROM UNDERGROUND COAL-GASIFICATION ENERGY SOURCES, 1978, 3 (3-4): : 263 - 275
- [5] CHARACTERIZATION OF CONDENSATES PRODUCED DURING UNDERGROUND COAL-GASIFICATION IN SITU, 1982, 6 (01): : 1 - 27
- [6] MUTAGENICITY OF COMPLEX EFFLUENTS FROM UNDERGROUND COAL-GASIFICATION ENVIRONMENTAL MUTAGENESIS, 1981, 3 (03): : 304 - 305
- [7] TRANSITION OF UNDERGROUND COAL-GASIFICATION FROM RESEARCH TO COMMERCIALIZATION IN SITU, 1980, 4 (02): : 176 - 176
- [10] OUTLOOK FOR UNDERGROUND COAL-GASIFICATION ERDOL & KOHLE ERDGAS PETROCHEMIE, 1976, 29 (09): : 409 - 415