MSZ 16578-1971 All publications of university level 10, 678 on large-scale model raw material industry, rubber and plastic industry 679 on related industries of different raw materials (stone, natural raw materials)
1971MSZ 16578-1971 All publications of university level 10, 678 on large-scale model raw material industry, rubber and plastic industry 679 on related industries of different raw materials (stone, natural raw materials)