300

Social Sciences

350

Public Administration

301

Sociology and anthropology

351

Of central governments

302

Social interaction

352

Of local governments

303

Social processes

353

Of U.S. federal and state government

304

Factors affecting social behavior

354

Of specific central government

305

Social groups

355

Military science

306

Culture and institutions

356

Foot forces and warfare

307

Communities

357

Mounted forces and warfare

308

358

Other specialized forces and services

309

359

Sea (Naval) forces and warfare

310

General Statistics

360

Social Services; Association

311

361

General social problems and welfare

312

362

Social welfare problems and services

313

363

Other social problems and services

314

Of Europe

364

Criminology

315

Of Asia

365

Penal and related institutions

316

Of Africa

366

Association

317

Of North America

367

General clubs

318

Of South America

368

Insurance

319

Of other parts of the world

369

Miscellaneous kinds of associations

320

Political Science

370

Education

321

Systems of government and states

371

School management; special education

322

Relation of state to organized groups

372

Elementary education

323

Civil and political rights

373

Secondary education

324

The political process

374

Adult education

325

International migration and colonization

375

Curriculums

326

Slavery and emancipation

376

Education of women

327

International relations

377

Schools and religion

328

The legislative process

378

Higher education

329

379

Government regulation, control, support

330

Economics

380

Commerce, Communications, Transport

331

Labor economics

381

Internal commerce (Domestic trade)

332

Financial economics

382

International commerce (Foreign trade)

333

Land economics

383

Postal communication

334

Cooperatives

384

Communications, telecommunication

335

Socialism and related systems

385

Railroad transportation

336

Public finance

386

Inland waterway and ferry transportation

337

International economics

387

Water, air space transportation

338

Production

388

Transportation, ground transportation

339

Macroeconomics and related topics

389

Metrology and standardization

340

Law

390

Customs, Etiquette, Folklore

341

International law

391

Costume and personal appearance

342

Constitutional and administrative law

392

Customs of life cycle and domestic life

343

Military, tax, trade, industrial law

393

Death customs

344

Social, labor, welfare and related law

394

General customs

345

Criminal law

395

Etiquette (Manners)

346

Private law

396

347

Civil procedure and courts

397

348

Law (Statutes), regulations, cases

398

Folklore

349

Law of specific jurisdictions and areas

399

Customs of war and diplomacy