Maps can be obtained from Oklahoma Geological SurveyMain Office: 100 E. Boyd, Rm. N-131, Norman, OK 73019phone: 800/330-3996, FAX 405/325-7069Publications Sales Office: 1218-B W. Rock Creek Rd.Norman, OK 73069phone: 405-360-2886Web Address: http://www.ou.edu/special/ogs-pttc/
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