Paul W. Heisey <br/><br/>
Accelerating the transfer of wheat breeding gains to farmers : A study of the dynamics of varietal replacement in Pakistan 

 - Mexico  CIMMYT  1990 
 - 94p 
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>968-6127-40-2 
<br/><br/><label>Dewey Class. No.: </label>633.1109549  / HEI