International symposium on the ecological bases for environmental management on 28 and 29 Sept., 1970 at the FAO headquarters, via delle Terme di Ceracalla 

 - Rome  International Council of Scientific Unions  1970 
 - n.p.  30cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental management
<br/><br/><label>LC Class. No.: </label>EAF FOS I57