Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1969)

Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1970)

Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1977)

Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1978)

Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1979)

Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1980)

Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1981)

Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1982)

Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1983)

Opisthobranchian and lamellarian gastropods collected by the "Vema" - Marcus, Ernst 1893 -1968 (American Museum of Natural History, 1969)

Die Opisthobranchiata der Siboga-expedition - Bergh, Rudolph, 1824 -1909 (Buchhandlung und druckerei vormals E. J. Brill, 1905)

Our living world; an artistic edition of the Rev. J. G. Wood's Natural history of animate creation - Wood, J. G. (John George), 1827 -1889 (S. Hess, 1885)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Young J. Pentland, 1895)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton & Co, 1895)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton, 1895)

Pacific science - University of Hawaii. (University Press of Hawaii, 1959)

Palaeontographica (Theodor Fischer, 1887)

Palaeontographica (Theodor Fischer, 1891)

Palaeontographica (Theodor Fischer, 1895)

Palaeontographica (Theodor Fischer, 1896)

Palaeontographica (Theodor Fischer, 1905)