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- [31] UNITED-STATES CRUDE-OIL IMPORT LIMITATION OF 8.5 MMBPD TERMED UNREALISTIC HYDROCARBON PROCESSING, 1979, 58 (09): : 23 - 23
- [35] SLOW SAND FILTRATION IN THE UNITED-STATES SLOW SAND FILTRATION : RECENT DEVELOPMENTS IN WATER TREATMENT TECHNOLOGY, 1988, : 29 - 45