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Disallow: /prep/1995/PSFiles/
Disallow: /prep/1996/PSFiles/
Disallow: /prep/1997/PSFiles/
Disallow: /prep/1998/PSFiles/
Disallow: /prep/1999/PSFiles/
Disallow: /prep/2000/PSFiles/
Disallow: /prep/2001/PSFiles/
Disallow: /prep/2002/PSFiles/
Disallow: /prep/phd/PSFiles/
Disallow: /prep/diploma/PSFiles/