वर्ग:सुजीवनविज्ञान

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).

उपवर्ग

या वर्गात फक्त खालील उपवर्ग आहे.