Unesco list of documents and publications 1972 - 1976:  Subject index. 
Unesco. 
 - 2nd edition. 
 - Paris :  Unesco,  1979. 
 - 873p. 
<br/><br/><label>ISBN: </label>92-3-101607-5 
<br/><br/><label>LC Class. No.: </label>Z 6483   / .U54 1979