Wikilivros:Classificação Decimal de Dewey/500
- 501: Philosophy & theory
- 502: Miscellany
- 503: Dictionaries & encyclopedias
- 504: Not assigned or no longer used
- 505: Serial publications
- 506: Organizations & management
- 507: Education, research, related topics
- 508: Natural history
- 509: Historical, areas, persons treatment
- 511: General principles
- 512: Algebra & number theory
- 513: Arithmetic
- 514: Topology
- 515: Analysis
- 516: Geometry
- 517: Not assigned or no longer used
- 518: Numerical analysis
- 519: Probabilities & applied mathematics
- 521: Celestial mechanics
- 522: Techniques, equipment, materials
- 523: Specific celestial bodies & phenomena
- 524: Not assigned or no longer used
- 525: Earth (Astronomical geography)
- 526: Mathematical geography
- 527: Celestial navigation
- 528: Ephemerides
- 529: Chronology
- 531: Classical mechanics Solid mechanics
- 532: Fluid mechanics Liquid mechanics
- 533: Gas mechanics
- 534: Sound & related vibrations
- 535: Light & paraphotic phenomena
- 536: Heat
- 537: Electricity & electronics
- 538: Magnetism
- 539: Modern physics
- 541: Physical & theoretical chemistry
- 542: Techniques, equipment, materials
- 543: Analytical chemistry
- 544: Qualitative analysis
- 545: Quantitative analysis
- 546: Inorganic chemistry
- 547: Organic chemistry
- 548: Crystallography
- 549: Mineralogy
- 551: Geology, hydrology, meteorology
- 552: Petrology
- 553: Economic geology
- 554: Earth sciences of Europe
- 555: Earth sciences of Asia
- 556: Earth sciences of Africa
- 557: Earth sciences of North America
- 558: Earth sciences of South America
- 559: Earth sciences of other areas
- 561: Paleobotany
- 562: Fossil invertebrates
- 563: Fossil primitive phyla
- 564: Fossil Mollusca & Molluscoidea
- 565: Other fossil invertebrates
- 566: Fossil Vertebrata (Fossil Craniata)
- 567: Fossil cold-blooded vertebrates
- 568: Fossil Aves (Fossil birds)
- 569: Fossil Mammalia
- 571: Not assigned or no longer used
- 572: Human races
- 573: Physical anthropology
- 574: Biology
- 575: Evolution & genetics
- 576: Microbiology
- 577: General nature of life
- 578: Microscopy in biology
- 579: Collection and preservation
- 581: Botany
- 582: Spermatophyta (Seed-bearing plants)
- 583: Dicotyledones
- 584: Monocotyledones
- 585: Gymnospermae (Pinophyta)
- 586: Cryptogamia (Seedless plants)
- 587: Pteridophyta (Vascular cryptograms)
- 588: Bryophyta
- 589: Thallobionta & Prokaryotae
- 591: Zoology
- 592: Invertebrates
- 593: Protozoa, Echinodermata, related phyla
- 594: Mollusca & Molluscoidea
- 595: Arthopoda, Other invertebrates
- 596: Vertebrata (Craniata, Vertebrates)
- 597: Cold-blooded vertebrates Fishes
- 598: Aves (Birds)
- 599: Mammalia (Mammals)
