The journal of geology. 

 - Chicago :    University of Chicago Press,    1947- 
 - v. :    ill. ;    25 cm. 
 - Bimonthly 
 - Vol. 55, no. 1 (Jan. 1947). 
<br/><br/>  Latest issue consulted: Vol. 109, no. 6 (Nov. 2001) 
<br/><br/><label>Dewey Class. No.: </label>550.5