FINANCIAL REQUIREMENTS AND METHODS OF FINANCING PETROLEUM EXPLORATION IN DEVELOPING COUNTRIES = BESOINS FINANCIERS ET METHODES DE FINANCEMENT DE L'EXPLORATION PETROLIERE DANS LES PAYS EN DEVELOPPEMENTPARRA FR.1982; PETROLEUM EXPLORATION STRATEGIES IN DEVELOPING COUNTRIES. UNITED NATIONS MEETING/1981/THE HAGUE; GBR; LONDON: GRAHAM AND TROTMAN; DA. 1982; PP. 177-191; 3 TAB. ; TABL.Conference Paper

OIL CONCESSIONS AND CONTRACTS : DEALING WITH THE UNCERTAINTIES.PARRA FR.1969; PETROLE GAZ ARABES; LBN; 1969(8), VOL. 1, NUM. 0009, P. 19 A 28Miscellaneous