BBrødrene ClassenBrødrene Classende John ErichsenMateriasIndustrialistsBiographyStatesmenPhilanthropistsClassenske FideicommisEdiciones (1)Brødrene Classen (2017)Gyldendal · dan · ISBN 9788702249446Más obras de John ErichsenThe science and art of surgeryThe science and art of surgeryThe science and art of surgery