Social science research for agricultural technology development  : spatial and temporal dimensions; proceeding of 
/ An internaional institute of tropial agriculture (IITA); Rochefeller foundation workshop,2-5 octobre 1990, Ibadan, Nigeria; ed by Karen Ann Dvorak 
. - Wallingford  : CAB international, cop. 1993
. - XVI-223 p.  ; 25 cm. 
 - Spatial and temporal dimensions .
<br/><br/><label>ISBN: </label>0851988067 
<br/><br/><label>Universal Decimal Class. No.: </label>630