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Kahn-Lang, Ariella, Lang, Kevin. (). The Promise and Pitfalls of Differences-in-Differences : Reflection on 16 and Pregnant and Other Application . : .

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Kahn-Lang, Ariella, Lang, Kevin. The Promise and Pitfalls of Differences-in-Differences : Reflection on 16 and Pregnant and Other Application. : , . Text.

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Kahn-Lang, Ariella, Lang, Kevin. The Promise and Pitfalls of Differences-in-Differences : Reflection on 16 and Pregnant and Other Application. : , . Text.

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Kahn-Lang, Ariella, Lang, Kevin. The Promise and Pitfalls of Differences-in-Differences : Reflection on 16 and Pregnant and Other Application. : , . Print.