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Melvil Decimal System: 620.001

Wording: Technology > Engineering > Engineering > Not set > General Engineering > Philosophy And Psychology

Dewmoji: 💡 > 🔩 > 🔩 > ? > ? > ?

0
Information
115,954
ℹ️
1
Philosophy and Psychology
115,844
💭
2
Religion
351,090
🙏🏽
3
Social Sciences
554,451
👫
4
Language
75,777
💬
5
Mathematics and Science
181,736
🔬
6
Technology
414,821
💡
7
Arts and Recreation
444,897
🎨
8
Literature
605,140
📚
9
Biography and History
396,598
🗿
60
General Technology
4,675
💡
61
Medicine
132,325
💉
62
Engineering
60,124
🔩
63
Agriculture & Animal Husbandry
41,598
🌱
64
Home Economics
88,244
🏠
65
Business
62,133
👔
66
Chemical Technology
7,172
🚀
67
Manufacturing
3,235
📦
68
Handicraft and Occupations
9,984
🔨
69
Building
5,331
👷
620
Engineering
6,389
🔩
621
Mechanical Engineering and Machinery
18,304
🏭
622
Mining Engineering and Mines and Mineral Resources
1,480
🕳
623
Military Engineering and Marine Engineering
7,044
⚓
624
Civil Engineering
2,955
🌉
625
Road and Railroad
2,173
🛤
626
--
20
🤷
627
Hydraulic Engineering
616
🌊
628
Sanitary; Municipal
2,533
🚽
629
Other Branches
18,610
🌿
620.0
1,513
620.1
Materials Science
2,068
620.2
Acoustics and noise
93
620.3
Vibrations
53
620.4
124
620.5
Nanotechnology
199
620.6
5
620.7
--
54
620.8
Human Factors
267
👨
620.9
40
620.00
General Engineering
1,498
620.01620.02
4
620.03
2
620.04
6
620.05620.06
1
620.07
1
620.08620.09
1
620.000620.001
Philosophy And Psychology
294
620.002
Miscellany
146
620.003
Dictionaries And Encyclopedias
11
620.004
Special Topics
698
620.005
2
620.006
Business
66
620.007
Education And Research
136
620.008
4
620.009
Biography And History
133
620.0010620.0011
Systems
77
620.0012620.0013620.0014
Language
4
620.0015
Mathematics
154
620.0016620.0017620.0018
2
620.0019

Works under MDS 620.001

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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

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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