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Melvil Decimal System: 621.43

Wording: Technology > Engineering > Mechanical Engineering and Machinery > Heat engineering > Internal combustion engines

Dewmoji: πŸ’‘ > πŸ”© > 🏭 > ? > ?

0
Information
195,777
ℹ️
1
Philosophy and Psychology
182,289
πŸ’­
2
Religion
460,996
πŸ™πŸ½
3
Social Sciences
1,014,352
πŸ‘«
4
Language
130,009
πŸ’¬
5
Mathematics and Science
322,290
πŸ”¬
6
Technology
750,603
πŸ’‘
7
Arts and Recreation
693,508
🎨
8
Literature
926,050
πŸ“š
9
Biography and History
589,816
πŸ—Ώ
60
General Technology
6,964
πŸ’‘
61
Medicine
251,541
πŸ’‰
62
Engineering
127,966
πŸ”©
63
Agriculture & Animal Husbandry
67,905
🌱
64
Home Economics
129,787
🏠
65
Business
119,741
πŸ‘”
66
Chemical Technology
15,639
πŸš€
67
Manufacturing
6,347
πŸ“¦
68
Handicraft and Occupations
15,467
πŸ”¨
69
Building
9,246
πŸ‘·
620
Engineering
18,945
πŸ”©
621
Mechanical Engineering and Machinery
40,517
🏭
622
Mining Engineering and Mines and Mineral Resources
2,830
πŸ•³
623
Military Engineering and Marine Engineering
11,874
βš“
624
Civil Engineering
7,073
πŸŒ‰
625
Road and Railroad
3,860
πŸ›€
626
--
35
🀷
627
Hydraulic Engineering
1,374
🌊
628
Sanitary; Municipal
6,162
🚽
629
Other Branches
35,296
🌿
621.0
1,009
621.1
Steam engineering
504
621.2
Hydraulic machinery
203
621.3
Electric engineering
28,297
621.4
Heat engineering
3,311
621.5
Pneumatic machinery and Compressed air and Refrigeration and refrigerating machinery
375
621.6
Fans (Machinery) and Pumping machinery
139
621.7
Production engineering and Factories and Machine-shop practice
129
621.8
Other mechanical engineering topics
2,177
621.9
Machine-tools
1,071
621.40
802
621.41
2
621.42
10
621.43
Internal combustion engines
499
621.44
44
621.45
Windmills
136
621.46
197
621.47
Solar engines
300
621.48
984
621.49
621.430
15
621.431
1
621.432
1
621.433
47
621.434
47
621.435
60
621.436
60
621.437
11
621.438
3
621.439

Works under MDS 621.43

1–50 of 436 ( 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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