 |
The 2007 CIA World Factbook
United States. Central Intelligence Agency |
 |
The 2008 CIA World Factbook
United States. Central Intelligence Agency |
 |
The 2009 CIA World Factbook
United States. Central Intelligence Agency |
 |
The 2010 CIA World Factbook
United States. Central Intelligence Agency |
 |
The 20-Mule-Team brigade
Pacific Coast Borax Company |
 |
The 21st Missouri Regiment Infantry Veteran Volunteers: Historical Memoranda
Unknown |
 |
The 23rd (Service) Battalion Royal Fusiliers (First Sportsman's) / A Record of its Services in the Great War, 1914-1919
Fred W. Ward |
 |
The 28th: A Record of War Service in the Australian Imperial Force, 1915-19, Vol. I / Egypt, Gallipoli, Lemnos Island, Sinai Peninsula
Herbert Brayley Collett |
 |
The 3 Little Kittens
Anonymous |
 |
The 32nd Mersenne Prime / Predicted by Mersenne
David Slowinski |
