Materials used as cigarette papers, filter plug wrap and filter joining paper, including materials having an oriented permeable zone. Determination of air permeability
System of product-quality indices. Filled-system thermometers. Solid-expansion and bimetal thermometers and temperature controllers. Nomenclature of indices
Electrical accessories. Circuit-breakers for overcurrent protection for household and similar installations. Part 2. Circuit-breakers for a.c. operation
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