@book {649, title = {Vermium terrestrium et fluviatilium : seu animalium infusoriorum, helminthicorum et testaceorum, non marinorum, succincta historia}, year = {1773}, publisher = {Havni{\ae} ; Lipsi{\ae}}, organization = {Havni{\ae} ; Lipsi{\ae}}, url = {http://www.biodiversitylibrary.org/item/100435$\#$page/5/mode/1up}, author = {O.F. M{\"u}ller} }