1993GOST 30067-1993 Universal single-bucket excavators full turning. General specifications
1979GOST 12910-1979 Single-bucket universal excavators. Methods of control tests
0000 GOST 12910-1967
GOST 12910-1979 Single-bucket universal excavators. Methods of control tests was changed to GOST 30067-1993 Universal single-bucket excavators full turning. General specifications.