On the Spermatophores in Earthworms of the Genus Pheretima (=Perichaeta)
Published in Proceedings of The Zoological Society of London, in 1911, in volume 1911, pages 412-420
Date published:1911
Published in Proceedings of The Zoological Society of London, in 1911, in volume 1911, pages 412-420
Date published:1911