00655nam a2200181Ia 4500 CTU_107074 210402s9999 xx 000 0 und d 665.5 I.61/Rep.3 Petroleum committee: Nine session, Geneva, 1980 : Working conditions and working environment in the petroleum industry, including offshore activities International Labour Organisation Geneva, Switzerland International Labour Office 1980 Petroleum engineering,Petroleum industry and trade Minh Trung tâm Học liệu Trường Đại học Cần Thơ