@inbook{RAS:SourceID:49997, author = {Graff, Ludwig von}, note = {World Polychaeta Database (WPolyDb). Graff is printed Dr Ludwig Graff here, not von Graff}, title = {Das Genus Myzostoma (F.S. Leuckart)}, url = {http://solo.bodleian.ox.ac.uk/OXVU1:oxfaleph012857796}, year = {1877} }