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Nippon Decimal Classification (NDC) 9th ed. -3rd Categories-

[Updated: 2008-Aug-01]
400 Natural sciences
401 Theory and philosophy
402 History and conditions
403 Reference books
404 Essays and lectures
405 Serial publications
406 Organizations
407 Study and teaching
408 Collected works. Collections
409 Science and Technology Policy
410 Mathematics
411 Algebra
412 Theory of numbers
413 Analysis
414 Geometry
415 Topological mathematics
416
417 Probabilities. Mathematical statistics
418 Numerical calculations
419 Mathematics of Nippon and China
420 Physics
421 Theoretical physics
422
423 Mechanics
424 Vibrations. Acoustics
425 Optics
426 Heat. Thermotics
427 Electricity and magnetism
428 Physical properties of matter
429 Atomic and nuclear physics
430 Chemistry
431 Physical and theoretical chemistry
432 Experimental chemistry
433 Analytical chemistry
434 Synthetical chemistry
435 Inorganic chemistry
436 Metallic elements, their compounds
437 Organic chemistry
438 Chemistry of cyclic compounds
439 Chemistry of natural products
440 Astronomy. Space sciences
441 Theoretical astronomy
442 Practical astronomy
443 Fixed stars
444 Sun
445 Planets. Satellites
446 Moon
447 Comets. Meteors
448 Earth. Astronomical geography
449 Horology. Calendars
450 Earth sciences
451 Meteorology
452 Oceanography
453 Seismology
454 Geomorphology
455 Geology
456 Historical geology. Stratigraphy
457 Paleontology
458 Petrology
459 Mineralogy
460 Biology
461 Theoretical biology
462 Biogeography
463 Cytology
464 Biochemistry
465 Microbes. Microbiology
466
467 Genetics. Evolution
468 General ecology
469 Anthropology
470 Botany
471 General botany
472 Phytogeography. Flora
473 Thallophyta
474 Algae and fungi
475 Bryophyta
476 Pteridophyta
477 Spermatophyta
478 Gymnospermae
479 Angiospermae
480 Zoology
481 General zoology
482 Zoogeography. Fauna
483 Invertebrata
484 Mollusca
485 Arthropoda
486 Insecta. Entomology
487 Vertebrata
488 Aves. Ornithology
489 Mammalia
490 Medical sciences
491 Fundamental medicine
492 Clinical medicine
493 Internal medicine
494 Surgery
495 Gynecology. Obstetrics
496 Ophthalmology. Otorhinolaryngology
497 Dentistry
498 Hygienics. Public health. Preventive medicine
499 Pharmaceutics
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