Ackermann, Robert John,  1933- <br/><br/>
Theories of knowledge :  a critical introduction / 
[by] Robert Ackermann. 
 - New Delhi :  Tata McGraw-Hill,  c1965 
 - ix, 305 p. :  illus. ;  23 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Knowledge, Theory of.
<br/><br/><label>Dewey Class. No.: </label>121  / ACT 1965