Ingle, Sean; Glendenning, Barry 9 October 2003 | Stormer, Neil 20 June 2006 |
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Austin, Merrill 10 July 2007 | The most recent changed was in , from 24 to 32 |
Collett, Mike 2 July 2004.
10Illustrated History Of Football Reed International Books Limited 1996 | See Hill, Blake and Clark 1998 ; Schuster 1998 |
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Embassy of the United States in London | The number of competing teams has varied over the history of the competition |
"Law 3 — The Number of Players".