GOST 21.602-2003 System of design documents for construction. Rules for execution of working documentation of heating, ventilation and air conditioning
2016GOST 21.602-2016 System of design documents for construction. Rules for execution of working documents of heating, ventilation and air conditioning
2003GOST 21.602-2003 System of design documents for construction. Rules for execution of working documentation of heating, ventilation and air conditioning
1979GOST 21.602-1979 System of design documents for construction. Heating, ventilation and air conditioning. Working drawings