TY - BOOK AU - Albrecht Von,C. ED - Institute of Research and Projects for Oil and Gas ED - World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) ED - Institute of Research and Projects for Oil and Gas TI - Stimulation of asphaltic deep wells and shallow wells in lake Maracaibo, Venezuela U1 - 060-665.5 W938 1979 ER -