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1. Apps for Rails Developers (thoughtsonrails.com) 1 point by jmartin2683 on Dec 2, 2012 | past 2. Polymorphic associations with active record (thoughtsonrails.com) 1 point by jmartin2683 on Dec 2, 2012 | past 3. Thoughts_on_rails (thoughtsonrails.com) 1 point by jmartin2683 on Dec 2, 2012 | past

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