http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Trends in size and production of the aggregate farm enterprise, 1909-36
xvi, 255 pages : illustrations, map ; 26 cm.
by Raymond G. Bressler, Jr. and John A. Hopkins.
Report (National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques (U.S.)) ; no. A-6