Conference mondiale de l'energie 14e Congres Montreal 89 = World Energy Conference 14th Congress Montreal 89 : l'energie demain = energy for tomorrow : L'ENERGIE ET LA SOCIETE = ENERGY AND SOCIETY : REPONSES AUX BESOINS ENERGETIQUES FUTURS DE LA SOCIETE = PLANNING TO MEET SOCIETY'S FUTURE ENERGY NEEDS. 1.2 (Nepoznat, 1989)