Soltero Gardea, Sergio Evaluation of short duration grazing on an oak-bunchgrass range typein the central region of Chihuahua, México Sergio Soltero Gardea - xiii, 107 h. 28 cm. Tesis (Maestría), Texas Tech University Subjects--Topical Terms: Manejo de pastizales y ecología Dewey Class. No.: T / SOL 1987