A monograph of the Echinoidea. II. Bothriocidaroida, Melonechinoida, Lepidocentroida, and Stirodonta. Atlas
Mortensen, T. (1935). A monograph of the Echinoidea. II. Bothriocidaroida, Melonechinoida, Lepidocentroida, and Stirodonta. Atlas. C.A. Reitzel/Oxford University Press: Copenhagen/London. 16, LXXXIX pp.
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