http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Introduction.--The newspaper problem.--The immigration problem.--The negro problem.--The woman problem.--The industrial problem.--Problem of civil liberty.--Problem of international relations.--Problem of war and peace.
by Hayes Baker-Crothers and Ruth Allison Hudnut.