American journal of science. 

 - New Haven :    Yale University,    1958- 
 - v. :    ill. ;    23 cm. 
 - Monthly 
 - Vol. 256, no. 7 (1958)- 
<br/><br/>  Latest issue consulted: Vol. 313, no. 7 (Sept. 2013). 
<br/><br/><label>ISSN: </label>0002-9599 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Science -- Periodicals.<br/> Geology -- Periodicals
<br/><br/><label>Dewey Class. No.: </label>505