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Melvil Decimal System: 509.2273

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

Dewmoji: πŸ”¬ > πŸ”¬ > βŒ› > ? > ? > ? > ?

0
Information
179,064
ℹ️
1
Philosophy and Psychology
167,145
πŸ’­
2
Religion
436,901
πŸ™πŸ½
3
Social Sciences
912,661
πŸ‘«
4
Language
121,346
πŸ’¬
5
Mathematics and Science
288,882
πŸ”¬
6
Technology
666,318
πŸ’‘
7
Arts and Recreation
658,667
🎨
8
Literature
877,170
πŸ“š
9
Biography and History
559,529
πŸ—Ώ
50
General Science
23,427
πŸ”¬
51
Mathematics
55,021
βž—
52
Astronomy
16,002
🌌
53
Physics
28,638
🍎
54
Chemistry
17,604
βš—
55
Earth sciences & geology
25,681
🌎
56
Fossils & prehistoric life
6,132
πŸ’€
57
Life Sciences
39,321
🐠
58
Botany
16,168
🌿
59
Zoology
60,888
🐼
500
General Science
7,162
πŸ”¬
501
Theory And Instruction
2,562
502
Miscellany
1,054
πŸ‘
503
Dictionaries And Encyclopedias
589
πŸ“•
504
[No longer in use]
128
🀷
505
Periodicals
167
T
506
Societies
273
507
Education And Research
3,222
508
Natural history
5,150
509
Biography And History
3,120
βŒ›
509.0
By Period
221
T
509.1
Other Geographic Classifications
43
509.2
Biography
808
509.3
Ancient World
82
509.4
Europe
291
509.5
Asia
95
509.6
Africa
8
509.7
North America
137
509.8
South America
32
509.9
Pacific
25
509.20
2
509.21509.22
258
509.23
2
509.24
40
509.25
7
509.26509.27509.28509.29
509.220509.221509.222
1
509.223
2
509.224
7
509.225509.226
1
509.227
29
509.228509.229
8
509.2270509.2271
3
509.2272509.2273
26
509.2274509.2275509.2276509.2277509.2278509.2279

Works under MDS 509.2273

1–24 of 24 titles | covers | shelf

Wording

1922 Edition
Modern language
Emoji

"Far Friends"

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

None

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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