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5 sept 1942 año - public health units grouped into 5 districts

Descripción:

each headed by medical supervisor who provided technical advice regarding medical and sanitary problems arising in community

Añadido al timeline:

PR Medicine Timeline

ByLauren Acosta
9 abr 2021
0
0
404

fecha:

5 sept 1942 año
Ahora mismo
~ 83 years ago
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