GOST 28764-90

Optics and photonics. Optical materials. Methods for determination of optical homogeneity

Ocular screw thread for optical devices. Profile and dimensions

Reprography. Micrography. Cards with picture aperture. General specifications

Radio-frequency cable type PK 50-4-21. Specifications

Switch point rails. Specifications

Power supply systems based on renewable energy sources for rural electrification. Part 9-6. Photovoltaic systems. evaluation and selection of individual stand-alone systems depending on the degree of providing electrical loads