Wolff, Robert Paul. <br/><br/>
Introductory philosophy / 
Robert Paul Wolff. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1979. 
 - 609 p. ;  25 cm. 
<br/><br/>Includes bibliography. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Phylosophy--Addresses, essays, lectures.