Russian standards PDF
Cameras for 35-mm film. Basic dimensions of threaded connections of lenses with cameras
Document status: Active
Whirling and centrifugal-whirling pumps. Types and basic parameters
Document status: Active
Axles for diesel locomotives of narrow gauge railways. Technical requirements
Document status: Active
Reagents. Determination of copper with colorimetric methods
Document status: Replaced by GOST 10554-2016