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Category
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Science in the 1420s
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Science in the 15th century
:
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1400s
1410s
1420s
1430s
1440s
1450s
1460s
1470s
1480s
1490s
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Subcategories
This category has the following 3 subcategories, out of 3 total.
1420 in science
(1 C)
1426 in science
(1 C)
*
Geography in the 1420s
(4 C)
Categories
:
Science in the 15th century
1420s by topic
Science by decade
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