http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
American-Egyptian cotton variety tests at the El Paso Valley Experiment Station, 1949-50
Lee S. Stith, P.J. Lyerly and R.H. Peebles.
Progress report (Texas Agricultural Experiment Station) ; 1406