http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Texas Agricultural and Mechanical College System
by E.M. Trew, Extension Associate Agronomist.
In cooperation with the United States Department of Agriculture.
B (Texas Agricultural and Mechanical College System. Agricultural Extension Service) ; 168 [1952 revision]