00552cam a2200157 i 4500 33024 33024 170420t20152015nr ab b f000 0 eng c [978: 978952223] 2015 PTDF compendium of oil and gas research / edited by Ahmed Aminu Galadima. Abuja PTDF 2015 xxiv, 608 pages : illustrations (some color), maps (some color) ; 1 computer disc (color ; 4 3/4 in.) Petroleum 12569 Natural gas Galadima, Ahmed Aminu. 12628 BK TN877.N6 A15 2015