-The Dictionary of Physical Geography
-Merriam-Webster's Geographical Dictionary
-The Dictionary of Human Geography
-Geography of the World
-Penguin Encyclopedia of Places
Information on the history, people, government, economy, geography, communications, transportation, military, and transnational issues for 266 world entities.
A massive central data source and a handy way to graphically compare nations. NationMaster is a vast compilation of data from such sources as the CIA World Factbook, UN, and OECD. Using the form above, you can generate maps and graphs on all kinds of statistics with ease.