The annual cycles of two species of Onchidoris (Opisthobranchia: Nudibranchia)
Todd, C.D. (1979). The annual cycles of two species of Onchidoris (Opisthobranchia: Nudibranchia), in: Naylor, E. et al. (Ed.) Cyclic Phenomena in Marine Plants and Animals: Proceedings of the 13th European Marine Biology Symposium, Isle of Man, 27 September-4 October 1978. pp. 65-72
In: Naylor, E.; Hartnoll, R.G. (Ed.) (1979). Cyclic phenomena in marine plants and animals: Proceedings of the 13th European Marine Biology Symposium, Isle of Man, 27 September - 4 October 1978. Pergamon Press: Oxford. ISBN 0-08-023217-5. 477 pp., more
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