Altered states of consciousness  A book of readings 
ed by Charles T Tart 
 - New York  John Wiley and Sons  1969 
 - 575p.  incl., ref., ind. 
<br/><br/><label>LCCN: </label>69-16040 
<br/><br/><label>Dewey Class. No.: </label>154.08  / N69;1