Tratado del medio ambiente 
/ Felipe Ruza Tarrío, director. 
 - Madrid :  AGLO,  1993. 
 - 8 v.  ills. (some col.); photos 
<br/><br/><label>ISBN: </label>8486149371 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental protection<br/>Environmental policy<br/>Human ecology
<br/><br/><label>Dewey Class. No.: </label>301.31