Ouspensky, P. D. <br/><br/>
Tertium Organum: The Third Canon of Thought/   A key to the Enigmas of the World 

 - Guildford:  White Crow Books Productions,  2011. 
 - 381p. 
<br/><br/><label>ISBN: </label>9781907661471 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Philosophy
<br/><br/><label>Dewey Class. No.: </label>197