33
/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
395890
34189
1
Public Timelines
Menu
Public Timelines
FAQ
Public Timelines
FAQ
For education
For educational institutions
For teachers
For students
Cabinet
For educational institutions
For teachers
For students
Open cabinet
Create
Close
Create a timeline
Public timelines
Library
FAQ
mar 28, 1949 - Se propone el estudio de la ergonomía (Estados Unidos)
Added to timeline:
Revisión histórica de la salud ocupacional y la seguridad industrial
By
Daniel Obando
7 Dec 2017
0
0
2502
Date:
mar 28, 1949
Now
~ 76 years ago
About & Feedback
Terms
Privacy
Library
FAQ
Support 24/7
Cabinet
Get premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL
