DeweyDecimalSystem|Natural_sciences_and_mathematics
:500 Natural sciences & mathematics
: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
:510 Mathematics
:511 General principles
:512 Algebra & number theory
:513 Arithmetic
:514 Topology
:515 Analysis
:516 Geometry
:519 Probabilities & applied mathematics
:520 Astronomy & allied sciences
:521 Celestial mechanics
:522 Techniques, equipment, materials
:523 Specific celestial bodies & phenomena
:525 Earth (Astronomical geography)
:526 Mathematical geography
:527 Celestial navigation
:528 Ephemerides
:529 Chronology
:530 Physics
: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
:540 Chemistry & allied sciences
:541 Physical chemistry & 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
:550 Earth sciences
: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
:560 Paleontology Paleozoology
: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
:570 Life sciences
: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
:580 Botanical sciences
: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
:590 Zoological sciences
:591 Zoology
:592 Invertebrates
:593 Protozoa, Echinodermata, related phyla
:594 Mollusca & Molluscoidea
:595 Other invertebrates
:596 Vertebrata (Craniata, Vertebrates)
:597 Cold-blooded vertebrates Fishes
:598 Aves (Birds)
:599 Mammalia (Mammals)