MDS621.38928

Wording: TechnologyEngineering and allied operationsApplied physicsElectrical, magnetic, optical, communications, computer engineering; electronics, lightingElectronics, communications engineeringAudio, sound engineeringNot setNot set

Dewmoji: 💡🔩🏭?????

0
Information
216,948
ℹ️
1
Philosophy and Psychology
229,419
💭
2
Religions
562,779
🙏
3
Social sciences
1,169,921
👫
4
Language
177,109
💬
5
Natural sciences and mathematics
380,441
🔬
6
Technology
844,132
💡
7
The arts
857,504
🎨
8
Literature
1,201,263
📚
9
History and Geography
703,933
🗺️
60
General Technology
8,586
💡
61
Medicine and health
277,111
💉
62
Engineering and allied operations
140,868
🔩
63
Agriculture & related technologies
78,723
🌱
64
Home and family management
152,587
🏠
65
Management and auxiliary services
131,640
👔
66
Chemical Technology
17,794
🚀
67
Manufacturing
7,692
📦
68
Manufacture of products for specific uses
18,201
🔨
69
Building
10,930
👷
620
Engineering
19,566
🔩
621
Applied physics
42,616
🏭
622
Mining Engineering and Mines and Mineral Resources
3,424
🕳
623
Military Engineering and Marine Engineering
13,937
624
Civil Engineering
7,390
🌉
625
Road and Railroad
5,150
🛤
626
unassigned since 1911 7th Edition (was Canal Engineering)
72
🤷
627
Hydraulic Engineering
1,678
🌊
628
Sanitary; Municipal
6,571
🚽
629
Other Branches
40,464
🌿
621.0
1,143
621.1
Steam engineering
567
621.2
Hydraulic machinery
238
621.3
Electrical, magnetic, optical, communications, computer engineering; electronics, lighting
30,327
621.4
Heat engineering
3,663
621.5
Pneumatic machinery and Compressed air and Refrigeration and refrigerating machinery
415
621.6
Fans (Machinery) and Pumping machinery
142
621.7
Production engineering and Factories and Machine-shop practice
155
621.8
Machine Engineering
2,398
621.9
Machine-tools
1,300
621.30
Electric power plant
418
621.31
Generation, modification, storage, transmission of electric power
4,466
621.32
Lighting
356
621.33
Electric Railways
41
621.34
Magnets and Electromagnets
107
621.35
Batteries and Superconductivity
32
621.36
Optical engineering
2,657
621.37
Electrical Measurement Instruments
133
621.38
Electronics, communications engineering
18,275
621.39
Computer engineering
2,189
621.380
Light current engineering
216
621.381
Electronics
8,160
621.382
Communications
3,727
621.383
Telegrapy
36
621.384
Radar, Radio
3,311
621.385
Telephony
313
621.386
Telephone terminal equipment
46
621.387
Telephone transmission equipment
21
621.388
Television
699
621.389
Audio, sound engineering
935
621.3890
621.3891
621.3892
101
621.3893
414
621.3894
621.3895
6
621.3896
1
621.3897
23
621.3898
621.3899
1
621.38920
621.38921
621.38922
621.38923
621.38924
621.38925
621.38926
621.38927
621.38928
76
621.38929
621.389280
3
621.389281
621.389282
621.389283
621.389284
621.389285
621.389286
621.389287
621.389288
621.389289

Selected Works under MDS 621.38928 (76)

Related Tags

"Far Friends"

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

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Wording

1922 Edition
Do NOT copy from the copyrighted sources. 1922 edition here, in absurd phonetic English. Use standard spelling.
Modern Language
Modern wording should be based on the Free Decimal System or on the 1922 edition of Dewey. Language and concepts may be modernized. Do not use an in-copyright source.
Emoji
A single emoji for this DDC Class. The full emoji will be composed of the emojis from the top level to this one.