Technology audit and production reserves; Том 5, № 3(49) (2019): Chemical engineering; 22-27 Technology audit and production reserves; Том 5, № 3(49) (2019): Хімічна інженерія; 22-27 Technology audit and production reserves; Том 5, № 3(49) (2019): Химическая инженерия; 22-27