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Melvil Decimal System: 620.0023

Wording: Technology > Engineering > Engineering > Not set > General Engineering > Miscellany > Careers

Dewmoji: πŸ’‘ > πŸ”© > πŸ”© > ? > ? > ? > ?

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
60
General Technology
6,938
πŸ’‘
61
Medicine
250,925
πŸ’‰
62
Engineering
127,505
πŸ”©
63
Agriculture & Animal Husbandry
67,830
🌱
64
Home Economics
129,551
🏠
65
Business
119,608
πŸ‘”
66
Chemical Technology
15,558
πŸš€
67
Manufacturing
6,322
πŸ“¦
68
Handicraft and Occupations
15,431
πŸ”¨
69
Building
9,223
πŸ‘·
620
Engineering
18,920
πŸ”©
621
Mechanical Engineering and Machinery
40,346
🏭
622
Mining Engineering and Mines and Mineral Resources
2,779
πŸ•³
623
Military Engineering and Marine Engineering
11,846
βš“
624
Civil Engineering
7,059
πŸŒ‰
625
Road and Railroad
3,741
πŸ›€
626
--
34
🀷
627
Hydraulic Engineering
1,366
🌊
628
Sanitary; Municipal
6,154
🚽
629
Other Branches
35,260
🌿
620.0
4,000
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
πŸ‘¨
620.9
52
620.00
General Engineering
3,961
620.01620.02
9
620.03
3
620.04
17
620.05620.06
1
620.07
2
620.08620.09
3
620.000
2
620.001
Philosophy And Psychology
913
620.002
Miscellany
359
620.003
Dictionaries And Encyclopedias
19
620.004
Special Topics
1,945
620.005
15
620.006
Business
162
620.007
Education And Research
307
620.008
10
620.009
Biography And History
220
620.0020
1
620.0021
23
620.0022
15
620.0023
Careers
143
620.0024620.0025
6
620.0026620.0027
2
620.0028
152
620.0029
1
620.00230620.00231620.00232620.00233620.00234
1
620.00235
1
620.00236620.00237
14
620.00238620.00239
1

Works under MDS 620.0023

1–50 of 130 ( 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

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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