Total data: 7


Almanac of the 50 states: basic data profiles with comparative tables
Hornor, Louise L.;Palo Alto, CA : Information Publications , 2003


The world almanac and book of facts 2004
World Almanac Education Group, Inc.;New York : World Almanac Books , 2004



Almanac of the 50 states
American Medical Association;Berkeley, California : Greenwood Press , 2010