Standard Test Method for Air Permeability of Textile Fabrics1
This general is issued under the ﬁxed designation d 740; the range right now following the designation indicates the year of unique adoption or, in the case of revision, the 12 months of final revision. Various in parentheses indicates the yr of remaining reapproval. A superscript epsilon (e) suggests a piece of writing alternate since the last revision or reapproval.
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You can also get ASTM D 737 – 96 International standard