Getting to yes : negotiating an agreement without giving in 
Fisher, Roger. 
 - second edition by Fisher, Ury and Patton. 
 -  Century Business.  1991 
 - xv, 207 pages. 
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<br/><br/><label>ISBN: </label>0-7126-5528-X 
<br/><br/><label>Dewey Class. No.: </label>808.8 F54g 1991