http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
xxvi, 346 pages : frontispiece, plates, facsimiles, diagrams ; 20 1/2 cm.
by Ellsworth Collings ... with an introduction by William H. Kilpatrick ...
The author's doctoral dissertation, Columbia university, 1924, but not published as a thesis.