Blaschka Marine Invertebrates: Vortex picta : Schizostomum productum, no. 663 : Mesostomum rostratum, no. 661 : Typhloplana, no. 393

Blaschka Marine Invertebrates: Vortex picta : Schizostomum productum, no. 663 : Mesostomum rostratum, no. 661 : Typhloplana, no. 393, 121417. The Rakow Research Library Manuscript Collection. https://archivesspace.cmog.org/repositories/3/digital_objects/332 Accessed June 01, 2023.