Practical Health Lessons. E-book. Formato PDF - 9780243620104

Practical Health Lessons. E-book. Formato PDF. IN no field of human activity has greater progress been made during recent years than in hygiene and sanitation. While the advance must always be led by a small but zealous group of workers, an accurate and up-to-date knowledge of the elementary facts of these two subjects should be the common property of all the people. It is the purpose of Practical Health Les sons to present to pupils in the grammar grades of the elementary schools, in clear and simple language, all the essential facts of personal hygiene and as much of public hygiene as every citizen ought to know.