Dvorak Karen, Anne-Marie Izac <br/><br/>
Exploratory surveys in research planning 
/ Karen Dvorak, Anne-Marie Izac 
. - Ibadan  : IITA, 1991
. - 19 p.  : couv. ill.  ; 30 cm. 
 - IITA Research Guide  28 .
<br/><br/>Bibliogr. 
<br/><br/><label>Universal Decimal Class. No.: </label>fre