author = { Hoppe, Rudolf AND Assmann, Hans },

title = { Wie geschah es? },

edition = { 1. - 5. Tsd } ,

publisher = {Verl. Tribüne},

keywords = { Industrial hygiene },

year = {1957},

address = { Berlin },

url = { http://slubdd.de/katalog?TN_libero_mab2 }