Turbellarian taxonomic database

author date   title journal / publication
Girard CF 1854 index card avail.
abs.
Researches upon Nemerteans and Planarians. I. Embryonic development of Planocera elliptica. 27 pages, 3 tables, Philadelphia 1854. [Separately publ. J. Acad. Nat. Sc. Philadelphia. 2: 307-325]

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