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BSI Group, 09/30/1980
Publisher: BS
File Format: PDF
$108.00$217.09
Published:30/09/1980
Pages:12
Electrical protection relays. Requirements for the principal families of protection relays-Specification for all-or-nothing electrical protection relays
$125.00 $251.46
Breathing apparatus-Specification for escape breathing apparatus
Devices with moving parts for the prevention of contamination of water by backflow-Specification for check valves of nominal size up to and including DN 54
$76.00 $152.40
Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use-Condensed phosphates for industrial use (including foodstuffs) - determination of oxides of nitrogen content - 3,4-xylenol spectrophotometric method