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jan 1, 1973 - The earliest known use of a bulletin board system by Aperture Science. (Portal ARG)
Description:
- 1973
- The earliest known use of a bulletin board system by Aperture Science.
Added to timeline:
Half-Life and Portal Universe Timeline
By
The Fancy Fedora
25 Dec 2018
1
0
8415
Date:
jan 1, 1973
Now
~ 52 years ago
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