Gregori, Thomas R. <br/><br/>
Technology and the economic development of the tropical African frontier 
Thomas R. Gregori 
 - Dar es Salaam  University of Dar es Salaam  (n.d) 
 - 19p.  34cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technological innovations<br/>African Sub-Saharan
<br/><br/><label>LC Class. No.: </label>EAF QTO HC517.E2E325 No.11