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Melvil Decimal System: 669.9

Wording: Technology > Chemical Technology > Metallurgy; Assaying > Assaying and Analysis

Dewmoji: 💡 > 🚀 > 💍 > ?

0
Information
173,995
ℹī¸
1
Philosophy and Psychology
161,468
💭
2
Religion
420,463
🙏đŸŊ
3
Social Sciences
879,721
đŸ‘Ģ
4
Language
117,736
đŸ’Ŧ
5
Mathematics and Science
273,525
đŸ”Ŧ
6
Technology
638,475
💡
7
Arts and Recreation
649,944
🎨
8
Literature
863,011
📚
9
Biography and History
549,142
đŸ—ŋ
60
General Technology
6,238
💡
61
Medicine
207,490
💉
62
Engineering
102,369
🔩
63
Agriculture & Animal Husbandry
61,737
🌱
64
Home Economics
122,808
🏠
65
Business
99,162
👔
66
Chemical Technology
11,486
🚀
67
Manufacturing
4,873
đŸ“Ļ
68
Handicraft and Occupations
14,101
🔨
69
Building
8,211
👷
660
Chemistry; Chemical Engineering
3,525
⚗
661
Chemicals
230
âŖ
662
Explosives; Fuel
531
đŸ’Ŗ
663
Beverages
806
664
Foods: Sugar, Starch, etc.
2,449
🍞
665
Lights: Gas, Oil, Candles, etc.
637
đŸ›ĸ
666
Ceramics: Glass, Clay, Cement, etc.
602
đŸē
667
Bleaching; Dyeing; Inks; Paints
441
🖌
668
Other Organic Chemic Industries
1,377
💄
669
Metallurgy; Assaying
888
💍
669.0
125
669.1
Iron & Steel
167
669.2
Precious Metals
72
669.3
Copper
22
669.4
Lead & Zinc
5
669.5
2
669.6
Tin
4
669.7
Other Metals and Alloys
79
669.8
Furnaces
4
669.9
Assaying and Analysis
180
669.90
1
669.91669.92
12
669.93
1
669.94
44
669.95
53
669.96
22
669.97669.98669.99

Works under MDS 669.9

1–50 of 142 ( 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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