Simpson, Brent M. <br/><br/>
The roots of change :  human behaviour and agricultural evolution in Mali / 
Brent M. Simpson 
 - London :  Intermediate Technology,  1999 
 - ix, 172 p. :  ill., maps ;  24 cm 
 - IT studies in indigenous knowledge and development .
<br/><br/>Includes bibliographical references (p. [146]-172) 
<br/><br/><label>ISBN: </label>1853394688 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Social aspects--Mali
<br/><br/><label>Dewey Class. No.: </label>338.1096623 SIM