1. The Politics of Land and Livestock;Benjaminsen,2005
2. Ecophysiology and management response of the subtropical grasslands of Southern America;Berreta,2001
3. Identificación de áreas valiosas de pastizal en las Pampas y Campos de Argentina, Uruguay y Sur de Brasil;Bilenca,2004
4. An ecological perspective;Briske,1991
5. Social and economical influences on grazing management;Conner,1991