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Berrill, N. J.; Abbott, D. P. (1949). The structure of the ascidian, Pycnoclavella stanleyi n.sp. and the nature of its tadpole larva. Canad. J. Res. D27: 43-49.
Berrill, N. J.; Abbott, D. P. (1949). The structure of the ascidian, Pycnoclavella stanleyi n.sp. and the nature of its tadpole larva. Canad. J. Res. D27: 43-49.
