The open university o0f Tanzania. <br/><br/>
The twelveth congregation:   for the conferment and presentation of degrees, diploma and certificates/  
Open university of Tanzania._ 
 - Dar es salaam:  Open university of Tanzania,  2004. 
 - 15 p.: 
<br/><br/><label>Dewey Class. No.: </label>EA.371.291 290 678 OPE.