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1 ene 1973 año - The earliest known use of a bulletin board system by Aperture Science. (Portal ARG)

Descripción:

- 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 dic 2018

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1 ene 1973 año

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~ 52 years ago

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