State system for ensuring the uniformity of measurements. Letter symbols to be used in electrical technology. Part 3. Logarithmic and related quantities and units of measurement
State system for ensuring the uniformity of measurements. State special standard and state verification schedule for means measuring specific heat-conduction of solid frames in the range of temperature 1800-3000 K
Soil quality. Biological methods. Determination of nitrogen mineralization and nitrification in soils and the influence of chemicals on these processes
Lifts. Checking, tests and measurements. Part 1. The procedure for conducting measurements and rules for registration of the results of the examination of lifts before operation
€10
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