305.2 Age groups
305.23 Young people
305.230811 Boys 305.23082 Girls 305.23086 Children by miscellaneous social attributes 305.23088297 Muslim children 305.23089 Indigenous children 305.230973 Children--United States 305.231 Child development 305.232 Infants 305.233 Children three to five 305.234 Children six to eleven 305.235 Young people twelve to twenty
Dewey Decimal Classification
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