50 brain-teasers : for meetings, presentations and training sessions 
Phelps, Graham Roberts. 
 -  Gower Publishing Ltd.  1998 
 - 157 pages. 
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<br/><br/><label>ISBN: </label>0-566-07979-8 (-X) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Employees training of.
<br/><br/><label>Dewey Class. No.: </label>658.3124 R54b 1998