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.
The size of the circles is proportional to the total number of publications per capita of that country during 2000. Countries names are given with their ISO abbreviation.
