Unknown location, 1930. Informational chart, about the distribution of OSE hygienical educational material, 1923-1927.
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Title:
Unknown location, 1930. Informational chart, about the distribution of OSE hygienical educational material, 1923-1927.
Description:
Unknown location, 1930. Informational chart, about the distribution of OSE hygienical educational material, 1923-1927. Topics covered were: general hygiene, social and infectious diseases, children's and school hygiene, mother and baby care. A total of 745,000 copies were distributed.