Improving evaluations / 
edited by Lois-ellin Datta and Robert Perloff. 
 - Beverly Hills, Calif. :  Sage Publications,  c1979. 
 - 280 p. ;  23 cm. 
<br/><br/><label>ISBN: </label>0803912404 0803912412 (pbk.) 
<br/><br/><label>LCCN: </label>79013627  
<br/><br/><label>LC Class. No.: </label>H62 .I54  / .I54 
<br/><br/><label>Dewey Class. No.: </label>309.1/73/0926