Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(ESRI—http://opendata.arcgis.com/about, DIVA-GIS—http://www.diva-gis.org/).
