C 2.830 - ელექტრონული რესურსებით მომსახურების განყოფილება
U.S. geological survey activities related to American Indians and Alaska natives [electronic resource] : fiscal year, 2005 / by U.S. Geological Survey. - [S.l.] : U.S. Dep. of the Interior : U.S. Geological Survey, [S.d.]. - 1 compact disc (CD-ROM) ; 12 cm.. - (USGS ; Circular 1313). - System requirements: Intel Pentium-class processor[MFN: 3226]