Public Timelines

For educational institutions For teachers For students Cabinet

For educational institutions For teachers For students Open cabinet

FAQ Ricevere il Premium

Create a timeline

Public timelines

About & Feedback Accordo Privatezza FAQ

Cabinet Get premium

Donate

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

Descrizione:

- 1973
- The earliest known use of a bulletin board system by Aperture Science.

Aggiunto al nastro di tempo:

Half-Life and Portal Universe Timeline

ByThe Fancy Fedora

25 dic 2018

1

0

8415

Data:

1 gen 1973 anni

Adesso

~ 52 years ago

About & Feedback Accordo Privatezza FAQ

Cabinet Get premium

Donate