Cessac, Jean <br/><br/>
Science teaching in the secondary schools of tropical Africa / 
J. Cessac 
 - Paris :  Unesco,  1963 
 - 79 p. :  ill. ;  21 cm. 
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching--Africa<br/>Science--Study and teaching (Secondary)