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Disallow: 
Disallow: /images/articles/
Disallow: /images/publications/pageflip/
Disallow: /e-mag.asp?*
Disallow: /download/

User-agent: Googlebot-Image
Disallow: /images/articles/

User-agent: Twitterbot
Allow: /images/articles/

User-agent: facebookexternalhit
Allow: /images/articles/