Le Breton, Preston P. <br/><br/>
Planning Theory / 
P.P. Le Breton & D.A. Henning. 
 - Englewood Cliffs, NJ :  Prentice-Hall, Inc.,  1961. 
 - 357 p. :  fig., tables. 
<br/><br/>Includes Index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Planning Theory