@inbook {5294, title = {Vergleichung der nordamerikanischen und europ{\"a}ischen Turbellarienfauna.}, booktitle = {Proc. Seventh Int. Zool. Congress, Boston, 19-24 August 1907}, year = {1910}, month = {1910}, pages = { - 944-948 pp}, publisher = {The University Press}, organization = {The University Press}, address = {Cambridge, MA}, keywords = {Childia, Childia baltica, Childia groenlandica, Childia pansa, Childia spinosa, Convoluta groenlandica}, author = {Graff,Lvon} }