Chernobyl radiation map from CIA handbook, svg'd by User:Sting, and re-anglified by me (to the same strange names used in the original).
http://www.lib.utexas.edu/maps/belarus.html, specifically http://www.lib.utexas.edu/maps/commonwealth/chornobyl_radiation96.jpg and File:Tchernobyl_radiation_1996.svg for the vector version
CIA Factbook, Sting (vectorisation), MTruch (English translation), Makeemlighter (English translation)