Criticism and interpretation 4,891 Civilization 3,897 Commerce 3,364 Colonies 2,066 Communism 2,002 Chemistry 1,935 Criticism, interpretation, etc 1,889 Composition and exercises 1,730 Constitutional law 1,512 Church history 1,376 Congresses 1,349 Children 1,332 Conduct of life 1,154 Constitutional history 1,089 Criminal law 1,084 Christianity 1,058 Constitutions 1,021 City planning 1,013 Campaigns 713 Cattle 706 Civil procedure 704 Courts 667 Civil service 659 Criminal procedure 658 Cult 651 Cities and towns 637 Corporations 632 Contracts 628 Civil law 624 Commercial law 556 Cooperative societies 553 Civil rights 544 Church and state 538 Corporation law 525 Christian life 524 Chinese fiction 518 Conflict of laws 515 Chinese 498 Comparative literature 489 Community development 484 Commercial policy 479 Cooperation 465 Carcinoma 458 Citizenship 447 Chemistry, Organic 409 Credit 404 Church buildings 401 Currency question 400 Catholic Church 396 Cost and standard of living 384 Chemistry, Analytic 378 Climate 365 Charities 362 Criticism 359 Curricula 355 Clergy 353 Crime 352 Coal 344 Cancer 334 Chemistry, Physical and theoretical 330 Copyright 326 Child welfare 325 Caste 323 Coal mines and mining 321 Classification 316 Chinese literature 309 Criticism, Textual 308 Composition 306 Control 302 Criminals 300 Chemistry, Technical 295 Conservation and restoration 295 Crystallography 294 Chinese drama 290 Colonization 287 Chinese language 284 Causes 281 Church architecture 277 Critique et interprétation 277 Crust 275 Child development 271 Courts-martial and courts of inquiry 268 Capitalism 264 Census, 1980 257 Child 244 Constitutional conventions 243 Control theory 238 Child psychology 236 Claims 236 Communication 236 Civics 233 Chinese poetry 232 Chinese essays 229 Commercial correspondence 223 Christianity and other religions 221 Construction industry 219 Christian ethics 212 Conservation of natural resources 211 Characters 207 Costs 205