February 20 is the 51st day of the year in the Gregorian Calendar. There are 314 days remaining, 315 in leap years.
Holidays and observances
February 19 - February 21 - January 20 - March 20 - more historical anniversaries
This law has often been applied to social sciences, and is a basic premise of the popular Game theory.
A reaction is any responsed caused by some other ...
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