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.
Location map of institutions producing OER-supported articles. Circles are centered over each zip code that produced at least one article. Circle size indicates the number of articles produced at that location; circle color indicates the total citation count of those articles (color figure online)
