@book{155987,
	author = {Vinogradov, V.N. and Institute of Petrochemical and Gas Industry (URSS) and World Petroleum Congress (11th. : 1983 : London) and Ibragimov, I.A. and Institute of Petrochemical and Gas Industry (URSS)},
	title = {Special features of training engineers for the gas and oil industry at the present stage of development}
}