GOST 11761-66

State system for ensuring the uniformity of measurements. Certified reference materials of gas mixtures with Hydrogen, Nitrogen, Oxygen, Carbon Oxide, Carbon Dioxide, Methane, Propane, Hexane. Procedure of determining the metrological characteristics

Masonry units. Methods of test. Part 13. Determination of net and gross dry density of masonry units (except for natural stone)

Half-finished bone product. Specifications

Masonry. Method for determination of flexural strength

Environmental management systems. Guidelines for using ISO 14001 to address environmental aspects and conditions within an environmental topic area. Part 1. General

Unified system for technological documentation. Identifying system of technological documentation