The Axe Majeur of Cergy-Pointoise in France: The Great Geodetic Work of François Mitterrand

See "Cergy-Pointoise’s “Axe Majeur” and Mitterrand’s Great – Unknown – Work. Whether all of the speculations there are true or not, it is interesting reading.

What is a Topographic Map? - USGS Frequently Asked Questions

What is a Topographic Map? - USGS Frequently Asked Questions: "- Sent using Google Toolbar"