Riehl, Sallie Bibliography of dryland agriculture - 3 ed. - Corvallis, Ore. : Oregon State University, 1980 - 2 v. Contenido : v.1 Bibliogrphy.--v.2 Author index, subject index LCCN: 48439 Subjects--Topical Terms: Agricultura--Regiones áridas. Dewey Class. No.: 631.0915 / R5 1980