Dilly, P. N. (1985). The habitat and behaviour of Cephalodiscus gracilis
(Pterobranchia, Hermichordata) from Bermuda. Journal of Zoology, London (A), 207: 223-239
395263
Dilly, P. N.
1985
The habitat and behaviour of Cephalodiscus gracilis
(Pterobranchia, Hermichordata) from Bermuda