http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
volumes : illustrations ; 30 cm. monthly.
Vol. numbering irregular: issue for May 1972 called v. 1, no. 1; issues for June, July, August 1972 called v. 16, no. 2; Sept. 1972- called v. 16, no. 5-
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