Sackman, Harold <br/><br/>
Delphi critique :  expert opinion, forecasting, and group process 

 - Mass. :  Lexington Books,  1974 
 - xiii, 142 p. ;  24 cm. 
<br/><br/>Bibliography : p. 77-137 
<br/><br/><label>ISBN: </label>0669961560 
<br/><br/><label>LCCN: </label>74-014858 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Decision making<br/>Consensus (Social sciences)<br/>Questionnaires<br/>Forecasting<br/>Public opinion polls