LeedyPaul D. <br/><br/>
practical research planning and design 

 - 6th ed 
 - Upper Saddle River,New Jercy  Prentice-Hall,Inc 
 - 304  26cm 
<br/><br/><label>ISBN: </label>0-13-241407-4 
<br/><br/><label>Publisher. No.: </label> Upper Saddle River,New Jercy 
<br/><br/><label>Dewey Class. No.: </label>001.4