00690nam a2200205 4500 1/8786 691022s1969 enk b 00110 eng 0714612200 9107 DLC GR-PeUP 338.2'7 FR Frankel, Paul H. Essentials of petroleum : a key to oil economics / [by] P. H. Frankel. New ed. with a foreword by M. A. Adelman. London : Cass, 1969. xv, 188 p. ; 23 cm. Includes bibliographies. Petroleum industry and trade. INST UNIPILB MAIN 20040709 338.2'7 FR 00108727 00108727 LOAN 0 1 /webopac/covers/03/9107_0714612200.jpg