Category:1521 in science

**1521 in science**
	natural science-related events during the year of 1521
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	Wikipedia
Instance of	events in a specific year or time period (science, 1522 in science, 1520 in science);
Facet of	science; 1521;
Point in time	1521;
Follows	1520 in science;
Followed by	1522 in science;
Authority file
	Q2808023;
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