1. 000 - Computer Science, Information & General Works
* 005 - Computer Science: "Code: The Hidden Language of Computer Hardware and Software" by Charles Petzold
* 020 - Library Science: "The Library in the Round" by John Cotton Dana
2. 100 - Philosophy & Psychology
* 150 - Psychology: "Thinking, Fast and Slow" by Daniel Kahneman
* 190 - Ancient, Medieval & Eastern Philosophy: "Meditations" by Marcus Aurelius
3. 200 - Religion
* 220 - Bible: "The New Oxford Annotated Bible"
* 290 - Other Religions: "The Tibetan Book of the Dead"
4. 300 - Social Sciences
* 303 - Sociology: "Bowling Alone" by Robert Putnam
* 320 - Political Science: "Democracy in America" by Alexis de Tocqueville
5. 400 - Language
* 420 - English Language: "Merriam-Webster's Collegiate Dictionary"
* 490 - Other Languages: "The Everything Learning Japanese Book"
6. 500 - Pure Science
* 510 - Mathematics: "A Brief History of Time" by Stephen Hawking
* 570 - Biological Sciences: "The Selfish Gene" by Richard Dawkins
7. 600 - Technology
* 620 - Engineering: "The Innovator's Dilemma" by Clayton M. Christensen
* 640 - Home Economics: "The Joy of Cooking"
8. 700 - The Arts
* 750 - Painting & Sculpture: "The Art Spirit" by Robert Henri
* 780 - Music: "The Complete Idiot's Guide to Classical Music"
9. 900 - Geography & History
* 910 - Geography: "Lonely Planet's Ultimate Travel Guide"
* 970 - History of North America: "Bury My Heart at Wounded Knee" by Dee Brown
Note: The Dewey Decimal System is designed to be hierarchical, with more specific topics nested within broader categories. These examples only offer a glimpse into the vast array of knowledge organized under these classifications.