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Productivity
Berndt, Ernst R. - In: NBER Reporter Online (2002) Spring 2002, pp. 1-6
Persistent link: https://www.econbiz.de/10010283820
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Productivity
Berndt, Ernst R. - In: NBER Reporter Online (2006) Winter 2006/07, pp. 1-9
Persistent link: https://www.econbiz.de/10010287455
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Interpreting changes in mental health expenditures: Minding our Ps and Qs
Berndt, Ernst R.; Busch, Susan H.; Frank, Richard G. - In: NBER Reporter Online (2000) Winter 2000/01, pp. 10-13
Persistent link: https://www.econbiz.de/10010289764