Children Language 133 Books and reading 89 History 82 Social conditions 77 History and criticism 55 Legal status, laws, etc 49 Child welfare 39 Child development 37 Research 37 Growth 36 Children's literature 34 Youth 32 Institutional care 29 Services for 28 World War, 1939-1945 20 Children's literature, English 19 Government policy 19 Social aspects 19 Nutrition 18 Children's rights 17 Care and hygiene 15 Law and legislation 15 Study and teaching 15 Health and hygiene 14 Language acquisition 14 Methodology 14 Social life and customs 14 Attitudes 13 Education 13