Pipeline valves. Forgings, die forgings and rolled stocks. Technical requirementsPipeline valves. Forgings, die forgings and rolled stocks. Technical requirements
State system for ensuring the uniformity of measurements. State special standard and state hierarchy diagram for variable pressure measuring instruments in the range of 1x10 in 2 degree to 1x10 in 6 degree Pa for frequencies of 5x10 in minus 2 degree to 1x10 in 4 degree Hz, durations from 1x10 in minus 5 degree to 10 s under constant pressure up to 5x10 in 6 degree Pa
System of standards on information, librarianship and publishing. Representation of extended cyrillic alphabet for information interchange on magnetic types
€10
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