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NDC10 449.8
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Nippon Decimal Classification 10th ed.
0 General works
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1 Philosophy
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2 General history
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3 Social sciences
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4 Natural science
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5 Technology. Engineering
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6 Industry and Commerce
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7 The arts. Fine arts
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8 Language
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9 Literature
40 Natural science
·
41 Mathematics
·
42 Physics
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43 Chemistry
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44 Astronomy. Space science
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45 Earth sciences
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46 Biology
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47 Botany
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48 Zoology
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49 Medical sciences
440 Astronomy. Space science
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441 Theoretical astronomy
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442 Practical astronomy
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443 Fixed stars
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444 Sun
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445 Planets. Satellites
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446 Moon
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447 Comets. Meteors
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448 Earth. Astronomical geography
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449 Horology. Calendars
449.1 時刻測定.時差.天文時.太陽時
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449.2 恒星時.恒星日.恒星月.恒星年
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449.3 暦書
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449.4 天文学的年代学
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449.5 天体暦.天体位置表
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449.8 各国の暦
449.81
Subcategories
This category has the following 2 subcategories, out of 2 total.
NDC10 449.81
(3 C)
三
三正綜覧
(16 F)
Category
:
NDC10 449 Horology. Calendars
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