http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Weekly (except last week in Aug., last week in Nov., and last week in Dec.), Jan. 3, 1998-
Weekly (except for year-end double issue)
Weekly (except last week in Aug. and last week in Dec.), <Aug. 14, 1982>-Dec. 20, 1997
Publisher varies: Aug. 23, 1975- published by Government Research Corp.; <Oct. 29, 1988-> published by National Journal, Inc.
Issued with: Capital source, <Dec. 20, 1997->