http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Department of Medical and Public Affairs.
Each number also has a distinctive title.
No. 1 (Aug. 1973)-no. 19 prepared by George Washington University,Population Information Program and published by the University's Dept. of Medical and Public Affairs; no. 20 (Sept. 1978)- published by The Johns Hopkins University, Population Information Program.