GOST 20494-90

System of building design documents. Water supply and sewerage. Outside networks. Working drawings

Microbiology of food and feeding stuffs. Preparation of samples for testing, original suspension and tenfold dilutions for microbiological research. Part 1. General rules for preparing the initial suspension and tenfold dilutions

Pneumatic and hydraulic check valves. Types, main parameters and specifications

Reagents. Methods for determination of heavy metals

Sugar beet. Specifications

Prosthetics and orthotics. Classification and description of prosthetic components. Part 1. Classification of prosthetic components