Children Language 133 Books and reading 89 History 78 Social conditions 72 History and criticism 55 Legal status, laws, etc 42 Child development 37 Child welfare 37 Research 37 Children's literature 34 Growth 33 Youth 29 Services for 27 Institutional care 26 World War, 1939-1945 20 Children's literature, English 19 Government policy 19 Nutrition 18 Social aspects 18 Care and hygiene 15 Study and teaching 15 Health and hygiene 14 Language acquisition 14 Methodology 14 Social life and customs 14 Attitudes 13 Children's rights 13 Education 13 Socialization 12