http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
a union list of serials commencing publication after December 31, 1949
Union list of serials in libraries of the United States and Canada
Joint Committee on the Union List of Serials
Eight monthly issues, four quarterly issues and annual cumulations which are self-cumulative through periods of five or ten years
Prepared under the sponsorship of the Joint Committee on the Union List of Serials.
A cumulation, 1950-70 (4 v.) published by the R. R. Bowker Co. in 1973.
Issues for 1955 called 1st ser.; 1956-60, 2d ser.; 1961- 3d ser.
Supersedes U.S. Library of Congress. Serial titles newly received.
Supplement to: Union list of serials in libraries of the United States and Canada, 3rd ed.
Cataloging Distribution Service Div., Library of Congress, Bldg. 159, Navy Yard Annex, Washington, DC 20541