http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Chemical weed control in Texas irrigated vegetables, 1967-1968
Chemical weed control in Texas for irrigated vegetables, 1967-68
compiled by Thomas D. Longbrake, extension vegetable specialist, Texas A&M University.
The United States Department of Agriculture cooperating.
Leaflet (Texas Agricultural Extension Service) ; 626 [1967 revision]