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| # | Name | Comments | Duration | Released |
|---|---|---|---|---|
| 416 | Form Objects pro | 335 comments | 18 minutes | Jun 03, 2013 |
| 398 | Service Objects pro | 114 comments | 12 minutes | Dec 18, 2012 |
| 394 | STI and Polymorphic Associations pro | 81 comments | 14 minutes | Nov 25, 2012 |