EARLY DEVELOPMENT OF THE SEA URCHIN
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Villee, C. Α., Lowens, M., Gordon, Leonard, E. and Rich, A. (1949). J. cell. comp.
Physiol. 33, 93.
Weber, R. (1956). Rev. suisse Zool. 63, 277.
Weber, R. and Boell, E. J. (1955). Rev. suisse Zool. 62, 260.
Weber, R. and Boell, E. J. (1962). Develop. Biol. 4, 452.
Whiteley, A. H. and Baltzer, F. (1958). Pubbl. Staz. zool. Napoli 30, 402.
Wigglesworth, U. B. (1957). Symp. Soc. exp. Biol. 11, 203.
Zeuthen, Ε. (1953). Arch, néerl. Zool., Suppl. 10, 31.
145
Villee, C. Α., Lowens, M., Gordon, Leonard, E. and Rich, A. (1949). J. cell. comp.
Physiol. 33, 93.
Weber, R. (1956). Rev. suisse Zool. 63, 277.
Weber, R. and Boell, E. J. (1955). Rev. suisse Zool. 62, 260.
Weber, R. and Boell, E. J. (1962). Develop. Biol. 4, 452.
Whiteley, A. H. and Baltzer, F. (1958). Pubbl. Staz. zool. Napoli 30, 402.
Wigglesworth, U. B. (1957). Symp. Soc. exp. Biol. 11, 203.
Zeuthen, Ε. (1953). Arch, néerl. Zool., Suppl. 10, 31.