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16 mar 1919 ano - commissioner of health invite international health board of rockefeller foundation to study hookworm

Descrição:

- plans were agreed for 5 year demonstration in contrrol of hookworm disease

Adicionado na linha do tempo:

PR Medicine Timeline

ByLauren Acosta

9 abr 2021

0

0

407

Data:

16 mar 1919 ano

Agora

~ 106 years ago

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