http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
relationship between item validity and test validity
New York, Bureau of Publications, Teachers College, Columbia University, 1934.
Reprint of the 1934 edition, issued in series: Teachers College, Columbia University. Contributions to education, number 621.
Originally presented as the author's thesis, Columbia.