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

30 déc. 1920 - Diaphragma invented in the 1920 and made a huge class difference in

Ajouté au bande de temps:

Unit A contraception

19 oct. 2017

0

0

640

Date:

30 déc. 1920

Maintenaint

~ Il y a 104 ans

About & Feedback Un accord Confidentialité FAQ

Cabinet Get premium

Donate

The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.

Secured with SSL