Dewey Decimal Classification

000 Computers, Information & General Reference

• 000 Computers, Internet and Systems
• 010 Biographies
• 020 Library & Information Science
• 030 Encyclopedias & Books of Facts
• 040 Unassigned
• 050 Magazines, Journals & Serials
• 060 Associations, Organizations & Museums
• 070 Journalism, Publishing & News Media
• 080 Quotations
• 090 Manuscripts & Rare Books

100 Philosophy & Psychology

• 100 Philosophy
• 110 Metaphysics
• 120 Epistemology
• 130 Astrology, Parapsychology & the Occult
• 140 Philosophical Schools of Thought
• 150 Psychology
• 160 Logic
• 170 Ethics
• 180 Ancient, Medieval & Eastern Philosophy
• 190 Modern Western Philosophy

200 Religion

• 200 Religion
• 210 Philosophy & Theory of Religion
• 220 The Bible
• 230 Christianity & Christian Theology
• 240 Christian Practice & Observance
• 250 Christian Pastoral Practice & Religious Orders
• 260 Church Organization, Social Work & Worship
• 270 History of Christianity
• 280 Christian Denominations
• 290 Other Religions

300 Social Sciences

• 300 Social Sciences, Sociology & Anthropology
• 310 Statistics
• 320 Political Science
• 330 Economics
• 340 Law
• 350 Public Administration & Military Science
• 360 Social Problems & Social Services
• 370 Education
• 380 Commerce, Communications & Transportation
• 390 Customs, Etiquette & Folklore

400 Language

• 400 Language
• 410 Linguistics
• 420 English & Old English Languages
• 430 German & Related Languages
• 440 French & Related Languages
• 450 Italian, Romanian & Related Languages
• 460 Spanish & Portuguese Languages
• 470 Latin & Italic Languages
• 480 Classical & Modern Greek Languages
• 490 Other Languages