004860000a22001450004500003000900000005001700009110006600026245008500092264008000177300001000257041000800267650002200275650002100297650002200318PH-MaWHO20241108112203.0 aU.S National institute of Child Health and Human Development. aPerspectives on human deprivation : biological, psychological, and sociological. aUnited States : bU.S. Department of Health, education, and Welfare.c1968. a323p. aeng aChild development aChild psychology aHuman development