GOST 19393-74

Unified system of design documentation. Graphical symbols in diagrams. Telephone sets, switchboards and switching telephone exchanges

Fertilizers. Determination of nitric and ammoniacal nitrogen according to Arnd

Cross-recessed countersunk (flat) head tapping screws

Reprography. Micrography. Readers. General specifications

Water. Method for determination of polychlorinated biphenyls

Safety of power transformers, power supplies, reactors and similar products. Part 2-2. Particular requirements and tests for control transformers and power supplies incorporating control transformers