Ecology and management of forests, woodlands, and shrublands in the dryland regions of the United States and México :  perspectives for the 21st. century / 
Peter F. Ffolliott, ALfredo Ortega-Rubio, eds. 
 - Tucson, Estados Unidos :  University of Arizona-Centro de Investigaciones Biológicas del Noroeste USDA Forest Service,  1999 
 - vii, 227 p. 
<br/><br/><label>ISBN: </label>I58-968-6837-18-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecología--México<br/>Ecología--Estados Unidos<br/>Bosques<br/>Ecología
<br/><br/><label>Dewey Class. No.: </label>333.72  / E19e