GSA TODAY
journal94233
E073005
US
1052-5173
English
Rivista
Geological Society of America:PO Box 9140:Boulder, CO 80301:(800)472-1988, (303)357-1004, EMAIL: rfreeman@geosociety.org, INTERNET: http://www.geosociety.org, Fax: (303)357-1070
1991
cannot
can
false