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Melvil Decimal System: 509.22

Wording: Mathematics and Science > General Science > Biography And History > Biography > Not set

Dewmoji: πŸ”¬ > πŸ”¬ > βŒ› > ? > ?

0
Information
195,291
ℹ️
1
Philosophy and Psychology
181,886
πŸ’­
2
Religion
459,268
πŸ™πŸ½
3
Social Sciences
1,012,288
πŸ‘«
4
Language
129,832
πŸ’¬
5
Mathematics and Science
321,836
πŸ”¬
6
Technology
748,891
πŸ’‘
7
Arts and Recreation
692,253
🎨
8
Literature
923,945
πŸ“š
9
Biography and History
588,112
πŸ—Ώ
50
General Science
24,812
πŸ”¬
51
Mathematics
61,768
βž—
52
Astronomy
17,348
🌌
53
Physics
34,083
🍎
54
Chemistry
21,970
βš—
55
Earth sciences & geology
28,081
🌎
56
Fossils & prehistoric life
6,367
πŸ’€
57
Life Sciences
45,860
🐠
58
Botany
17,589
🌿
59
Zoology
63,958
🐼
500
General Science
7,505
πŸ”¬
501
Theory And Instruction
2,732
502
Miscellany
1,233
πŸ‘
503
Dictionaries And Encyclopedias
614
πŸ“•
504
[No longer in use]
154
🀷
505
Periodicals
185
T
506
Societies
292
507
Education And Research
3,480
508
Natural history
5,316
509
Biography And History
3,301
βŒ›
509.0
By Period
232
T
509.1
Other Geographic Classifications
43
509.2
Biography
860
509.3
Ancient World
87
509.4
Europe
317
509.5
Asia
103
509.6
Africa
9
509.7
North America
142
509.8
South America
31
509.9
Pacific
27
509.20
3
509.21509.22
279
509.23
2
509.24
41
509.25
7
509.26509.27509.28509.29
509.220
1
509.221509.222
1
509.223
2
509.224
8
509.225509.226
1
509.227
29
509.228509.229
8

Works under MDS 509.22

1–50 of 256 ( next )titles | covers | shelf
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Wording

1922 Edition
Modern language
Emoji

"Far Friends"

MDS classes with significant recommendations overlap, excluding ones under the same top-level class.

None

Related tags

What is MDS?

Melvil stands for "Melvil Decimal System," named after Melvil Dewey, the famous librarian. Melvil Dewey invented his Dewey Decimal System in 1876, and early versions of his system are in the public domain.

More recent editions of his system are in copyright, and the name "Dewey," "Dewey Decimal," "Dewey Decimal Classification" and "DDC" are registered trademarked by OCLC, who publish periodic revisions.

LibraryThing's MDS system is based on the classification work of libraries around the world, whose assignments are not copyrightable. MDS "scheduldes" (the words that describe the numbers) are user-added, and based on public domain editions of the system.

The Melvil Decimal System is NOT the Dewey Decimal System of today. Wordings, which are entered by members, can only come from public domain sources. The base system is the Free Decimal System, a public domain classification created by John Mark Ockerbloom. Where useful or necessary, wording comes from the 1922 edition of the Dewey Decimal System. Language and concepts may be changed to fit modern tastes, or to better describe books cataloged. Wordings may not come from in-copyright sources.

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