Russian standards PDF

Plain bearings. Hardness testing of bearing metals. Compound materials

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Optics and optical instruments. Microscopes. Connecting dimensions of tube slides and tube slots

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Laboratory glassware. Graduated pipettes. Part 4. Blow-out pipettes

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Drilling rings and drills for solid mineral resources. Basic parameters

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Moulding sands. Method for determination of gas permeability

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Moulding sands. Method for determination of mass loss on ignition

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