BOLLENS .C.JOHN <br/><br/>
A GUIDE TO PARTICIPATION :  FIELD WORK ROLE PLAYING CASE, AND OTHER FORMS 

 - 1ST ED 
 - NEW JERSEY  PRENTICE-HALL INC  1973 
<br/><br/><label>ISBN: </label>0-13-370577-3 
<br/><br/><label>Dewey Class. No.: </label>300 GUI