Russell, Bertrand <br/><br/>
Logic and knowledge  essays, 1901-1950 
edited by Robert Charles Marsh. 
 - London  G. Allen & Unwin  1956. 
 - xi, 382 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Philosophy--Addresses, essays, lectures.<br/>Logic, Symbolic and mathematical--Addresses, essays, lectures.