A vegetation classification system applied to Southern California / 
by Timothy E. Paysen... [et al.] 
 - Washington, D.C. :  United States Government Printing Office,  1980 
 - 33 p. :  ill. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vegetation classification<br/>Vegetation surveys<br/>Plant communities
<br/><br/><label>Dewey Class. No.: </label>581.012