Environmental education in the light of the Tbilisi conference. 

 - Paris :  UNESCO,  c1980. 
 - 100  p. 
<br/><br/><label>ISBN: </label>923101787x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--Study and teaching--Addresses, essays, lectures.<br/>Nature --Study and teaching--Addresses, essays, lectures.
<br/><br/><label>LC Class. No.: </label>QH541.2  / .T32  / U58