Standard Speciﬁcation for Bronze Trolley Wire1
This popular is issued under the ﬁxed designation b 9; the range right away following the designation indicates the yr of authentic adoption or, inside the case of revision, the year of final revision. various in parentheses suggests the yr of closing reapproval. a superscript epsilon (e) indicates a piece of writing trade since the closing revision or reapproval.
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