Posts By: Colin DeVilbiss
| Date | Post | Topic |
| 11/02/2009 | Not exactly unobservable | On Understanding Data Abstraction, Revisited |
| 11/02/2009 | Yes, characteristic of both | On Understanding Data Abstraction, Revisited |
| 11/03/2009 | True--thank you for clarifying my thoughts | On Understanding Data Abstraction, Revisited |
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