Mutasari ya mafundishano ya sayansi katika shule ya msingi 

 - Dar es Salaam  University  of Dar es salam  1972 
 - 33p.  21cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>LC Class. No.: </label>EAF PAM Q181.A2T34