Seidman, Ann W. <br/><br/>
The agricultural revolution 
Ann W. Seidman 
 - Dar es Salaam  University of Dar es Salaam  1971 
 - 47p.  34cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture<br/>Agricultural innovations
<br/><br/><label>LC Class. No.: </label>EAF QTO HC517.E2S42 No.1