History 83 Bibliography 67 Education 33 Politics and government 29 Public welfare 27 Universities and colleges 23 Management 22 Hospitals 20 Economic conditions 19 Finance 19 Research 18 Economic aspects 17 Employment 17 Study and teaching 17 Accounting 16 Programmed instruction 16 Training of 14 Economic policy 13 Industrial relations 13 Social conditions 13 Statistics 13 Wages 13 Description and travel 12 Education, Higher 12 English language 12 Foreign relations 12 Geology 12 Theater 12 Science 11 Agriculture 10