%0 Journal Article %T TESTS OF PTFE COMPOSITE MATERIALS FOR SLIDING RINGS %A Kundera, Ch %A Bochnia, J %A , %J Bulletin of Sumy National Agrarian University. The series: Mechanization and Automation of Production Processes %@ 2708-4892 %D 1970-01-01 %I Sumy National Agrarian University %~ DeepDyve