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[Subject: Hydraulic Engineering]
- conjunto de medidas tendentes a evitar as doenças (rede de esgotos, drenagem de pântanos, abastecimento de águas, etc. )
Translated by: DAVID LAURENT
Translated in 8 languages
[Subject: Humankind]
Translated by: CHERBINO SONIA
Translated in 7 languages
Translated by: SYLVIA VERGARA
Translated in 6 languages