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Melvil Decimal System: 620.8

Wording: Technology > Engineering > Engineering > Human Factors

Dewmoji: 💡 > 🔩 > 🔩 > 👨

0
Information
195,741
ℹī¸
1
Philosophy and Psychology
182,263
💭
2
Religion
460,825
🙏đŸŊ
3
Social Sciences
1,014,164
đŸ‘Ģ
4
Language
129,985
đŸ’Ŧ
5
Mathematics and Science
322,242
đŸ”Ŧ
6
Technology
750,552
💡
7
Arts and Recreation
693,368
🎨
8
Literature
925,888
📚
9
Biography and History
589,703
đŸ—ŋ
60
General Technology
6,960
💡
61
Medicine
251,523
💉
62
Engineering
127,961
🔩
63
Agriculture & Animal Husbandry
67,901
🌱
64
Home Economics
129,775
🏠
65
Business
119,737
👔
66
Chemical Technology
15,639
🚀
67
Manufacturing
6,347
đŸ“Ļ
68
Handicraft and Occupations
15,463
🔨
69
Building
9,246
👷
620
Engineering
18,945
🔩
621
Mechanical Engineering and Machinery
40,517
🏭
622
Mining Engineering and Mines and Mineral Resources
2,830
đŸ•ŗ
623
Military Engineering and Marine Engineering
11,874
⚓
624
Civil Engineering
7,073
🌉
625
Road and Railroad
3,860
🛤
626
--
35
🤷
627
Hydraulic Engineering
1,374
🌊
628
Sanitary; Municipal
6,162
đŸšŊ
629
Other Branches
35,291
đŸŒŋ
620.0
4,001
620.1
Materials Science
9,086
620.2
Acoustics and noise
284
620.3
Vibrations
160
620.4
410
620.5
Nanotechnology
1,088
620.6
7
620.7
--
87
620.8
Human Factors
671
👨
620.9
52
620.80
3
620.81
1
620.82
293
620.83
4
620.84620.85
1
620.86
Safety
86
620.87620.88620.89

Works under MDS 620.8

1–50 of 564 ( next )titles | covers | shelf
( next )

Wording

1922 Edition
Modern language
Emoji

"Far Friends"

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

MDSScheduleRatioCount
00XInformation > Computing And Information17.9125
0XXInformation10.5126

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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