Gerdes, Paulus. <br/><br/>
Sona geometry :  reflections on the tradition of sand drawings in Africa south of the equator.   Vol. 1 / 
Paulus Gerdes. 
 - Maputo :  Instituto Superior Pedag�aogico ,  1994. 
 - 200p. :  ill. ;  21 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ethnomathematics--Mozambique.<br/>Ethnomathematics--Africa.
<br/><br/><label>LC Class. No.: </label>QA440