TY - BOOK AU - Mellink Bijtel, Eric. TI - Some ecological characteristics of three dry farming systems in the San Luis Potosí Plateau, México PY - 1986/// CY - [Tucson, Arizona] PB - El autor KW - Agricultura KW - Regiones áridas KW - San Luis Potosí N1 - D97-224; Tesis (D. Ph.) -- University of Arizona. Faculty of the Committee on Arid Lands Resource Sciences ER -