Pepper, Stephen C. <br/><br/>
World hypotheses  a study in evidence /  [Texte imprimé] : 
by Stephen C. Prpper 
 - Berkeley:  University of California Press,  1970 
<br/><br/><label>ISBN: </label>0-520-00994-0 
<br/><br/><label>Dewey Class. No.: </label>121.65