Category:1504 in science

**1504 in science**
	natural science-related events during the year of 1504
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Instance of	events in a specific year or time period (science, 1505 in science, 1503 in science);
Facet of	science; 1504;
Point in time	1504;
Follows	1503 in science;
Followed by	1505 in science;
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	Q4550171;
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