Russian standards
Electrical insulating impregnated paper. Specifications
Document status: Active
Microscopes. Screw threads for objectives. Dimensions
Document status: Active
Printing types. Type family Journaljnaya roublenaya (for alphabets of Russian and roman graphic bases). Range of application. Type face design. Base line. Characters per 4 picas
Document status: Active
Optical glass. Method for determination of unstriae
Document status: Active