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000 100 200 300 400 500 600 700 800 900 [ วิทยาศาสตร์และคณิตศาสตร์ (Natural Sciences and Mathematics) ] back |
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500 510 520 530 540 550 560 570 580 590 [ ดาราศาสตร์ (Astronomy and Allied Sciences) ] |
| 520 521 522 523 524 525 526 527 528 529 |
| DC | คำอธิบาย | ||||||||
| 1 | ดาราศาสตร์ (Astronomy and Allied Sciences) | ||||||||
| 2 | Celestial mechanics | ||||||||
| 3 | Techniques, equipment, materials | ||||||||
| 4 | Specific celestial bodies & phenomena | ||||||||
| 5 | Not assigned or no longer used | ||||||||
| 6 | Earth (Astronomical geography) | ||||||||
| 7 | Mathematical geography | ||||||||
| 8 | Celestial navigation | ||||||||
| 9 | Ephemerides | ||||||||
| 10 | Chronology | ||||||||
| [แสดง 10/10 รายการ] | |||||||||