GOST 12.4.061-1988 Occupational safety standards system. Method for determination of working capacity of man fitted with individual protection means*, 1988-04-19 Update
GOST 27.002-1989 Industrial product dependability. General principles. Terms and definitions*, 1989-04-19 Update
GOST 12.4.174-1987 history
1987GOST 12.4.174-1987 Occupational safety standards system. Means for individual protection of breathing organs. Nomenclature of quality indices