Journal of Research, US Geological Survey 

 - WASHINGTON, d.c. :  US GEOLOGICAL SURVEY, 
 - Bimestral 
<br/><br/><label>ISSN: </label>0091-374X 
 = Journal of Research, US Geological Survey 
 = J. RES. US GEOL. SURV. 
<br/><br/><label>Subjects--Index Terms: </label>GEOLOGIA