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Мining equipment. Drilling units for exploration drilling from the surface with bullies with a removable core receiver. General technical conditions
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Rings for accessory tools. Design and dimensions
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Microbiology of food and animal feed. Preparation of test samples, initial suspension and decimal dilutions for microbiological examination. Part 6. Specific rules for the preparation of samples taken at the primary production stage
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Enzyme preparations for food industry. Method for determination of proteolytic activity
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