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- [5] CHEMICAL DESULFURIZATION OF COAL TO MEET POLLUTION-CONTROL STANDARDS ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1974, : 29 - 29
- [6] LOCAL INITIATIVES IN POLLUTION-CONTROL - POLLUTION-CONTROL ZONES ROYAL SOCIETY OF HEALTH JOURNAL, 1979, 99 (05): : 199 - 207