00277nam a2200109Ia 450000500170000008000170001724500720003426000250010630000100013150000070014158300190014820260716043112.0  a08.11.01 O68  aFacts and figures : a graphical analysis of world energy up to 1990  bOPECaViennaATc1991  a34 p.  aDC  c3/7/00kM2LMGR