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1 janv. 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.

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Half-Life and Portal Universe Timeline

ByThe Fancy Fedora

25 déc. 2018

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Date:

1 janv. 1973

Maintenaint

~ Il y a 52 ans

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