Etzel, Barbara C. <br/><br/>
New Developments in Behavioral Research  :Theory , Method , and Application 
/ by Barbara C. Etzel 
 - New York:  Lawrence Erlbaum Associates, Publishers,  1977. 
 - xvi, 637p.; 
<br/><br/><label>ISBN: </label>0470991348 
<br/><br/><label>Dewey Class. No.: </label>150.194  / ETZ/N