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Melvil Decimal System: 547.12

Wording: Mathematics and Science > Chemistry > Organic > Cyanogen and its compounds > Not set

Dewmoji: πŸ”¬ > βš— > ⌬ > ? > ?

0
Information
183,829
ℹ️
1
Philosophy and Psychology
172,351
πŸ’­
2
Religion
443,755
πŸ™πŸ½
3
Social Sciences
952,115
πŸ‘«
4
Language
123,707
πŸ’¬
5
Mathematics and Science
297,296
πŸ”¬
6
Technology
692,375
πŸ’‘
7
Arts and Recreation
669,452
🎨
8
Literature
891,726
πŸ“š
9
Biography and History
567,666
πŸ—Ώ
50
General Science
23,864
πŸ”¬
51
Mathematics
56,683
βž—
52
Astronomy
16,316
🌌
53
Physics
30,054
🍎
54
Chemistry
19,002
βš—
55
Earth sciences & geology
26,281
🌎
56
Fossils & prehistoric life
6,175
πŸ’€
57
Life Sciences
40,856
🐠
58
Botany
16,495
🌿
59
Zoology
61,570
🐼
540
Chemistry
4,495
βš—
541
Physical; Theoretical
4,143
πŸ’­
542
Chemical laboratories
305
πŸ”¬
543
Analytic
1,836
🌈
544
Qualitative Analysis [No longer used]
178
545
Quantitative Analysis [No longer used]
134
546
Inorganic
1,691
⚨
547
Organic
4,662
⌬
548
Crystallography
633
πŸ’Ž
549
Mineralogy
925
βš’
547.0
770
547.1
Cyanogen and its compounds
429
547.2
Hydrocarbons; Fatty series
604
547.3
Alcohols; Phenols
129
547.4
Ethers: simple, compound; haloid
106
547.5
Aldehydes
258
547.6
Ketones; Quinones
116
547.7
Acids: acid halids, acid anhydrids, sulfo-acids
1,036
547.8
Nitroderivates: amines, compound ammoniums, amids, amic acids, azo-bodies, azoxy-bodies, hydrazo-bodies, diazo-bodies
166
547.9
Compounds with metals
4
547.10
4
547.11547.12
80
547.13
190
547.14547.15
1
547.16
3
547.17
1
547.18547.19
1
547.120547.121547.122
60
547.123547.124
2
547.125547.126547.127547.128
6
547.129

Works under MDS 547.12

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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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