The psychological wealth of nations do happy people make a happy society?
| Egile nagusia: | |
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| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
West Sussex, UK
Wiley-Blackwell
©2012.
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| Saila: | Contemporary social issues (Chichester, England).
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| Gaiak: |