http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
by Ludwig Gumplowicz ; [translated by Frederick W. Moore].
Translation of Grundriss der Sociologie.
Reprint of the edition published by the American Academy of Political and Social Science, Philadelphia, which was issued as number253 of its publications.
Publications of the American Academy of Political and Social Science ; no. 253