Public Timelines

For educational institutions For teachers For students Cabinet

For educational institutions For teachers For students Open cabinet

FAQ Obtenir le Premium

Create a timeline

Public timelines

About & Feedback Un accord Confidentialité FAQ

Cabinet Get premium

Donate

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.

Ajouté au bande de temps:

Half-Life and Portal Universe Timeline

ByThe Fancy Fedora

25 déc. 2018

1

0

8415

Date:

1 janv. 1973

Maintenaint

~ Il y a 52 ans

About & Feedback Un accord Confidentialité FAQ

Cabinet Get premium

Donate