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Vacuum technology. Standard methods for measuring vacuum-pump performance. Part 1. General description
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Symbols for alternating-current electricity meters
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Canned of the pacific Salmon fishes natural and natural with oil addition. Specifications
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Safety and control devices for gas burners and gas-burning appliances. Particular requirements. Part 2. Pressure regulators
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Unified system for design documentation. Graphical designations of materials and rules for their representation
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