BS EN ISO 80000-9:2013+A1:2011 Quantities and units. Physical chemistry and molecular physics has been changed from BS ISO 31-8:1992 Quantities and units - Physical chemistry and molecular physics.
BS EN ISO 80000-9:2013+A1:2011 Quantities and units. Physical chemistry and molecular physics has been changed from BS ISO 80000-9:2009 Quantities and units - Physical chemistry and molecular physics.
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