2013GOST 25543-2013 Brown coals, hard coals and anthracites. Classification according to genetic and technological parameters
1988GOST 25543-1988 Brown coals, hard coals and anthracites. Classification according to genetic and technological parameters
1986GOST 7055-1986 The moscow basin coals. Classification
0000 GOST 7055-1980
GOST 7055-1986 The moscow basin coals. Classification was changed to GOST 25543-1988 Brown coals, hard coals and anthracites. Classification according to genetic and technological parameters.