00620nam a22001937a 4500 20181210012645.0 180416b xxu||||| |||| 00| 0 eng d 3901139001 BD-DhBPA BD-DhBPA BD-DhBPA 665.540538 MOO 1989 Organization of Petroleum Exporting Countries. 81016 OPEC. Organization of Petroleum Exporting Countries. Austria: Vienna, Austria ; 1989. 91 p. ; 32 cm. OPEC series, 1. 81017 Maisha Petroleum industry and trade. 81018 ddc BK 28461 28461 0 ddc 0 0 BPATC BPATC GEN 2018-04-16 0 665.540538 MOO 1989 72492 2018-04-16 00:00:00 2018-04-16 BK Maisha