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Alkali-proof paper for mercury-zinc cells. Specifications
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Automobile roads of general use. Rubble and sand slag. Sampling
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Hardeners for epoxide resins. Determination of primary, secondary and tertiary amine group nitrogen content
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Acoustics. Measurement of room acoustic parameters. Part 2. Reverberation time in ordinary rooms
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Soils. Methods of laboratory determination of the specific resistance to penetration
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