Formats: Still image / Subjects: Water Purification - Digital Collections - National Library of Medicine Search Results

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1. Lute contra a doença: respeite estas normas de higiene

Publication:: [Portugal] : Direcção-Geral de Saúde, Serviço de Educação Sanitária, [19--]
Subject(s):: Water Purification
Disease Transmission, Infectious -- prevention & control
Hygiene
Sanitation

2. Cólera: veja como evitá-la

Publication:: [São Paulo] : Comissão Estadual de Prevenção e Combate ao Cólera, [19--]
Subject(s):: Cholera -- prevention & control
Food Handling -- methods
Hand Disinfection
Water Purification