References
- Cernosvitov , L. 1927 . Die Selbstbefruchtung bei den Oligochæten . Biol. Zb. , xlvii : 587 – 595 .
- Evans A. C. Guild W. J. McL. Studies on the relationships between earthworms and soil fertility.—IV. On the life-cycles of some British Lumbricidæ Ann. appl. Biol. in press 1948
- Gavrilov , K. 1939 . Sur la reproduction de Eiseniella tetrædra (Sav.) forma typica . Acta Zool. , xxx : 439 – 463 .