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8 févr. 1858 - Paul Louis Simond

Description:

French army physican
Working w/ pastuer
experimente with rats if fleas can transmit fleas to eachother.

Ajouté au bande de temps:

new disease

14 déc. 2018

1

0

559

Date:

8 févr. 1858

Maintenaint

~ Il y a 167 ans

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