MASSAWE, F. J.  <br/><br/>
OFC 002: Science and technology / 

 - Dar es Salaam;   The Open University of Tanzania,   1996. 
 - iv, 79 p. 
<br/><br/><label>ISBN: </label>9987000118 
<br/><br/><label>Dewey Class. No.: </label>600