Stringer, C. F. (1918). Chapter XII. The free-living flatworms (Turbellaria). In: Ward, H.B. & Whipple G.C. (Eds.). Freshwater Biology. John Wiley & Sons, New York. 1111 pages.
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Stringer, C. F.
1918
Chapter XII. The free-living flatworms (Turbellaria).
In: Ward, H.B. & Whipple G.C. (Eds.). Freshwater Biology. John Wiley & Sons, New York. 1111 pages.