This trendy is issued below the ﬁxed designation a 2; the number at once following the designation shows the yr of authentic adoption or, inside the case of revision, the yr of last revision. Quite a number in parentheses indicates the yr of closing reapproval. A superscript epsilon (e) suggests an article trade for the reason that last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense
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