http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Issue for May-June 1935 has supplement: Population density and distribution in urban areas / by John Ihlder.
Official organ of: American City Planning Institute, 1935-1938; American Institute of Planners, 1939-1943.
Vols. 1 (1935)-24 (1958) in v. 24 of later title (Includes index to the journal under its later title, and to: City planning, v. 1-10).
Journal of the American Institute of Planners