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Melvil Decimal System: 541.2

Wording: Mathematics and Science > Chemistry > Physical; Theoretical > Atomic theory

Dewmoji: đŸ”Ŧ > ⚗ > 💭 > ?

0
Information
174,163
ℹī¸
1
Philosophy and Psychology
161,561
💭
2
Religion
421,626
🙏đŸŊ
3
Social Sciences
880,262
đŸ‘Ģ
4
Language
117,843
đŸ’Ŧ
5
Mathematics and Science
273,666
đŸ”Ŧ
6
Technology
638,748
💡
7
Arts and Recreation
650,420
🎨
8
Literature
863,681
📚
9
Biography and History
549,751
đŸ—ŋ
50
General Science
23,045
đŸ”Ŧ
51
Mathematics
51,284
➗
52
Astronomy
15,191
🌌
53
Physics
26,306
🍎
54
Chemistry
15,621
⚗
55
Earth sciences & geology
24,690
🌎
56
Fossils & prehistoric life
6,037
💀
57
Life Sciences
36,746
🐠
58
Botany
15,403
đŸŒŋ
59
Zoology
59,343
đŸŧ
540
Chemistry
4,161
⚗
541
Physical; Theoretical
3,324
💭
542
Chemical laboratories
277
đŸ”Ŧ
543
Analytic
1,479
🌈
544
Qualitative Analysis [No longer used]
160
545
Quantitative Analysis [No longer used]
114
546
Inorganic
1,256
⚨
547
Organic
3,513
âŒŦ
548
Crystallography
475
💎
549
Mineralogy
862
⚒
541.0
125
541.1
2
541.2
Atomic theory
776
541.3
Physical chemistry
1,887
541.4
Various types of compounds
1
541.5
Molecular types
8
541.6
Compound radicals
541.7
Allotropy
34
541.8
2
541.9
Other general subjects
13
541.20
1
541.21541.22
396
541.23541.24
16
541.25
4
541.26
3
541.27541.28
164
541.29

Works under MDS 541.2

1–50 of 598 ( 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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