Hubbard. L. Ron <br/><br/>
Handbook for Preclears 
/ by L. Ron  Hubbard 
 - Denmark:  A Hubbard Publication;  1951. 
 - 423p. 
<br/><br/><label>ISBN: </label>978-87-7989-747-2 
<br/><br/><label>Dewey Class. No.: </label>299.936  / HUB/H