Heding, S. G. in Mortensen, T. (1938). Contributions to the study of the development and larval forms of Echinoderms. IV. K. danske Vidensk. Selsk. Skr. (naturv. -math.). (9) 7 (3): 1-59, 30 figs., 12 pls.
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Heding, S. G. in Mortensen, T.
1938
Contributions to the study of the development and larval forms of Echinoderms. IV.