01032nam 2200301Ka 450 991069661290332120080619145000.0(CKB)5470000002380736(OCoLC)232335069(EXLCZ)99547000000238073620080619d1960 ua 0engtxtrdacontentcrdamediacrrdacarrierGeographical center of the United States[electronic resource]Rockville, Md. :U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Ocean Survey,[1960?]3 unnumbered pages digital, PDF fileTitle from title screen (viewed on June 19, 2008).Geographical positionsUnited StatesGeographical positionsUnited States.National Ocean Service.GPOGPOBOOK9910696612903321Geographical center of the United States3177179UNINA