Cessac, J. <br/><br/>
Science teaching in the secondary schools of tropical Africa/ 
J. Cessac 
 - Paris:  UNESCO,  1969 
 - 79p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science<br/>Study and Teaching<br/>Secondary School
<br/><br/><label>Dewey Class. No.: </label>507.373 CES-S