Article
家蠅 - Home fly
Subject matters: 新知 - new knowledge,
Language level: Baihua
Keywords: health, disease, animals, food and drink, hygiene,
Persons:
周世安 Zhou Shian (Translator)
赫威德博士 Heweide bo shi (Author)
Subject matters: 新知 - new knowledge,
Language level: Baihua