Russian standards PDF
System of design documents for construction. Symbol graphics elements of buildings, works and structures
Document status: Active
System of design documents for construction. Symbols of elements of pipeline systems of buildings and structures
Document status: Active
System of design documents for construction. Graphical signs for drawings of motor-ways
Document status: Active
System of design documents for construction. Rules of executing of working documentation for linear structures of irrigation systems
Document status: Replaced by GOST 21.709-2019
Iron ores and concentrates. Method for determination of external specific surface
Document status: Active
Spectral high-intensity gas-discharge sources of optical radiation. General specifications
Document status: Active