geocoding

http://www.mapresso.com/adi

http://www.scribd.com/doc/2569355/Geo-Distance-Search-with-MySQL

http://earth-info.nga.mil/gns/html/namefiles.htm

https://developers.google.com/maps/documentation/javascript/services?hl=ko#Geocoding

http://maps.googleapis.com/maps/api/geocode/json?address=1600+Amphitheatre+Parkway,+Mountain+View,+CA&sensor=true

http://www.findlatitudeandlongitude.com/?loc=Continental+Divide&id=72178

http://en.wikipedia.org/wiki/List_of_countries_by_continent_(data_file)

http://drupal.org/node/161792

https://developers.google.com/maps/documentation/geocoding/?hl=ko

http://stackoverflow.com/questions/2989323/gmaps-address-component-types-get-country-name