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1 janv. 1987 - This is the most recent date for the Aperture Image Format. (Portal ARG)

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- 1987
- This is the most recent date for the Aperture Image Format. At that time, it is maintained by Doug Rattmann.

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Half-Life and Portal Universe Timeline

ByThe Fancy Fedora

25 déc. 2018

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Date:

1 janv. 1987

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~ Il y a 38 ans

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