Russian standards PDF
Antimonous lead alloys. Spectrographical method for determination of nickel
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Steel plates for machine retaining devices. Design and dimensions
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Reprography. Micrography. Apparatus. Conventional designations
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Reprography. Micrography. Cameras. Technical requirements
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Reprography. Micrography. Devices for mounting microfilms into jackets. General technical requirements. Methods of control
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