Geological Society of America data repository. 
 Data repository  GSA data repository 

 - 11 microfiches :  negative ;  11 x 15 cm. 
 - DRP005 (1987)-DRP007 (1989). 
<br/><br/><br/>Requires the use of a microfiche reader. 
 = Geological Society of America data repository. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Periodicals.