http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
volumes : illustrations, portraits ; 27 cm.
Frequency switched from weekly to biweekly as of 5/10/08, Volume 173, issue 6.
Title from cover; description based on: v. 105, no. 1 (Jan. 5, 1974).