OB in action : cases and exercises 
Wolff, Steven B. 
 - Sixth edition. 
 -  Houghton Mifflin Company.  2001 
 - xiv, 417 pages. 
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<br/><br/><label>ISBN: </label>0-618-05650-5 
<br/><br/><label>Dewey Class. No.: </label>GS 658 W83o 2001