41
/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
May 31, 2026
1937606
149217
2
Create a timeline
Public Timelines
For organizations
For companies
For educational institutions
For teachers
For students
Dashboard
For educational institutions
For teachers
For students
Dashboard
FAQ
Close
Create a timeline
Public timelines
FAQ
About & Feedback
Terms
Privacy
FAQ
Support 24/7
Dashboard
Get premium
Donate
jul 4, 1951 - Three types of polio virus isolated and identified
Added to timeline:
Timeline
By
Tassya
7 Dec 2018
0
0
308
Date:
jul 4, 1951
Now
~ 75 years ago
About & Feedback
Terms
Privacy
FAQ
Support 24/7
Dashboard
Get premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL
