Kuper, Michael and Westheide, Wilfried 1997. Ultrastructure of the male reproductive organs in the interstitial annelid Sphaerosyllis hermaphrodita (Polychaeta, Syllidae). Zoomorphology 117: 13-22.
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Kuper, M.; Westheide, W.
1997
Ultrastructure of the male reproductive organs in the interstitial annelid Sphaerosyllis hermaphrodita