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- [31] DEVELOPMENTS IN NORTHERN ROCKIES IN 1979. The American Association of Petroleum Geologists bulletin, 1980, 64 (09): : 1501 - 1509
- [33] INJURY EXPERIENCE IN STONE MINING, 1979. Informational Report - U.S. Department of Labor, Mine Safety and Health Administration, 1980, (1123):
- [34] DEVELOPMENTS IN SOUTH TEXAS IN 1979. The American Association of Petroleum Geologists bulletin, 1980, 64 (09): : 1476 - 1483
- [36] DEVELOPMENTS IN NEW YORK IN 1979. The American Association of Petroleum Geologists bulletin, 1980, 64 (09): : 1455 - 1461
- [37] DEVELOPMENTS IN EASTERN CANADA IN 1979. The American Association of Petroleum Geologists bulletin, 1980, 64 (09): : 1518 - 1528
- [38] FOOD PROCESSING WASTE MANAGEMENT, 1979. Proceedings - OSU Applied Mechanisms Conference (Oklahoma State University), 1979,
- [40] International Scientific Colloquium - Technical University of Ilmenau, 24th, 1979. Internationales Wissenschaftliches Kolloquium - Technische Hochschule Ilmenau, 1979,