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Data-book of happiness : a complementary reference work to 'Conditions of happiness' by the same author
Veenhoven, Ruut - 1984
Persistent link: https://www.econbiz.de/10000042823
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Conditions of happiness
Veenhoven, Ruut - 1984
Persistent link: https://www.econbiz.de/10014010381
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Data-book of happiness : a complementary reference work to 'conditions of happiness' by the same author
Veenhoven, Ruut - 1984
Persistent link: https://www.econbiz.de/10004745680
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The utility of happiness
Veenhoven, Ruut - 1986
Persistent link: https://www.econbiz.de/10013399429