Leedy, Paul D. <br/><br/>
Practical research:  planning and design 
[by] Paul D  . Leedy. 
 - New York,  Macmillan  [1974] 
 - x, 246 p.  illus.  29 cm. 
<br/><br/><label>ISBN: </label>0023692405 
<br/><br/><label>LCCN: </label>73007347  
<br/><br/><label>LC Class. No.: </label>Q180.A1  / L43 
<br/><br/><label>Dewey Class. No.: </label>001.4/2