Proposed American Standard PH22.75 A and B Windings of 16mm Single-Perforated Film

THE PROPOSED American Standard on A and B Windings of 16mm Single-Perforated Film was published previously in the September 1949 and January 1951 Journal and is again published on the following page for three-month trial and comment.

Print ISSN
Published
1953-02
Content type
Original Research
DOI
10.5594/J01111