http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
J.A. Deer, Associate County Agricultural Agent - Entomology. The Texas A. & M. College System.
The United States Department of Agriculture cooperating.
signos y síntomas (animales y seres humanos)
Leaflet (Texas Agricultural Extension Service) ; 427