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विकिपीडिया, मुक्‍त ज्ञानकोशातून

Euthenics is the study of the improvement of human functioning and well-being by improvement of living conditions. This category is for articles about the academic discipline of euthenics, not for the things that may improve well-being (e.g. sanitation).


या वर्गात फक्त खालील उपवर्ग आहे.