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| Started By | Thread Subject | Replies | Last Post | ||
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| mina.song | is there any private goods that changed from private goods | 0 | Jan 20 2008, 7:06 AM EST by mina.song | ||
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Thread started: Jan 20 2008, 7:06 AM EST
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one of the solution for positive externalities for private goods is to change it to public goods, but is there any goods that have changed?
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