http://en.wikipedia.org/wiki/Protected_designation_of_origin
Definition of Protected Designation of Origin (PDO)

http://www.cookitsimply.com/category-0020-01g6.html
Cheese Recipes

http://www.finefoodworld.co.uk/content/WorldCheeseAwards/62.html
The World Cheese Awards

http://www.granapadano.com/ing/consortium/index.htm
Consortium for Grana Padano cheese

http://www.nantwichshow.co.uk/
Nantwich International Cheese Awards 2009

http://www.parmigiano-reggiano.it
Consortium for Parmigiano Reggiano cheese

http://www.yeovalleygroup.co.uk/careers_warehouseanddistribution.php
Yeo Valley Group