TY - BOOK AU - Ivantsov,O.M. AU - Semenov,L.P. AU - Crory,F.E. AU - Semenov,L.P. AU - Crory,F.E. ED - All-Union Scientific Research Institute for Pipelines ED - World Petroleum Congress (11th. : 1983 : London) ED - All-Union Scientific Research Institute for Pipelines TI - Problems of environmental protection during construction and operation of pipeline systems in Northern regions U1 - 060-665.5 W938 1983 ER -