Russian standards PDF
Single-layer filter paper for the cigarette filters. Specifications
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Non-destructive control. Acoustic sound method of open porosity, apparent density, density and compression strength testing of refractory articles
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Agricultural animals. Methods of laboratory diagnostics for contagious pustulosious dermatitis
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Agricultural animals. Methods of laboratory diagnostics for morbus Aujeski
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Agricultural animals. Methods of laboratory diagnostics of classical pig-plague
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