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Vacelet, J.; Donadey, C.; Froget, C. (1987). The calcium carbonate spherules of Hemimycale columella (Demosponges, Poecilosclerida) and their taxonomic value.In: Vacelet J, Boury-Esnault N (eds) Taxonomy of Porifera from the N.E. Atlantic and the Mediterranean Sea. NATO ASI Series G, Ecological Sciences vol. 13. Springer, Heidelberg,. pp 259-274.
Vacelet, J.; Donadey, C.; Froget, C. (1987). The calcium carbonate spherules of Hemimycale columella (Demosponges, Poecilosclerida) and their taxonomic value.In: Vacelet J, Boury-Esnault N (eds) Taxonomy of Porifera from the N.E. Atlantic and the Mediterranean Sea. NATO ASI Series G, Ecological Sciences vol. 13. Springer, Heidelberg,. pp 259-274.
