MDS621.453096897

Expresiones: Ciencias aplicadasEngineering and allied operationsApplied physicsHeat engineeringWindmillsSin especificarSin especificarSin especificarSin especificarSin especificarSin especificarSin especificar

Dewmoji: ????????????

0
Obras generales y ciencias de la información
216,948
ℹ️
1
Filosofía
229,419
💭
2
Religión
562,779
🙏
3
Sociología
1,169,921
👫
4
Filología
177,109
💬
5
Ciencias naturales
380,441
🔬
6
Ciencias aplicadas
844,132
💡
7
Bellas artes
857,504
🎨
8
Literatura
1,201,263
📚
9
Historia
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
621.40
873
621.41
Calorie engines
1
621.42
Stirling Engines
15
621.43
Internal combustion engines
631
621.44
Geothermal Energy
54
621.45
Windmills
120
621.46
Electric Motors
215
621.47
Solar Energy
341
621.48
Nuclear Engineering
1,029
621.49
1
621.450
4
621.451
621.452
621.453
39
621.454
621.455
621.456
621.457
621.458
621.459
1
621.4530
26
621.4531
621.4532
621.4533
621.4534
621.4535
621.4536
621.4537
621.4538
621.4539
621.45300
621.45301
621.45302
621.45303
621.45304
621.45305
621.45306
621.45307
621.45308
621.45309
26
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621.453092
1
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621.453094
18
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621.453096
2
621.453097
2
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2
621.4530969
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621.45309681
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621.45309688
621.45309689
1
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Las clases del MDS con recomendaciones considerables se superponen, salvo por aquellas bajo la misma clase de nivel superior.

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Expresiones

Edición de 1922
NO copies de fuentes que se encuentren bajo derechos de autor. La edición de 1922 está disponible aquí, en un absurdo inglés fonético. Usa la grafía estándar.
Idioma Moderno
Las expresiones modernas deben basarse en el Sistema Decimal Gratuito (en inglés) o en la edición de 1922 de Dewey. El lenguaje y los conceptos pueden ser modernizados. No utilices una fuente que se encuentre bajo derechos de autor.
Emoji
Un solo emoji para esta clase de DDC. El emoji completo estará compuesto por los emojis desde el nivel superior hasta este.