C. M.  Yonge, ?Form and habit in species of Malleus (including the "hammer oysters") with comparative observations on Isognomon isognomon?, The Biological Bulletin, vol. 135, pp. 378-405, 1968.

K.  Wada, ?An electron microscope study of the formation of the periostracum of Pinctada martensii?, Journal of Electron Microscopy, vol. 17, p. 275, 1968.

K.  Wada, ?Cultured pearl and its structure?, in Proceedings of the Symposium on Mollusca held at Cochin from January 12 to 16, 1968, vol. 3, 3 vol., Mandapam Camp: Marine Biological Association of India, 1968, pp. 972-974.

L.  M. Vaillant, ?Remarques anatomiques sur les genres Vulsella et Crenatula de la fimille des Malléacées?, 1968.

B.  Runnegar, ?Preserved ligaments in Australian Permian bivalves?, Palaeontology, vol. 11, pp. 94-103, 1968.

V.  K. Rao, ?Pearl oysters of the Indian region?, in Proceedings of the Symposium on Mollusca held at Cochin from January 12 to 16, 1968, vol. 3, 3 vol., Mandapam Camp: Marine Biological Association of India, 1968, pp. 1017-1028.

K.  Nakazawa and Newell, N. D., ?Permian bivalves of Japan?, Memoirs of the Faculty of Science, Kyoto University, Series of Geology & Mineralogy, vol. 35, pp. 1-213, 1968.

J. L.  Larson, ?The species concept of Linnaeus?, Isis, vol. 59, pp. 291-299, 1968.

M.  A. Keen, ?West American mollusk types at the British Museum (Natural History), IV. Carpenter's Mazatlan collection?, The Veliger, vol. 10, pp. 389-439, 1968.

H. W.  Harry, ?An alternate view on the phylogeny of the Mollusca?, in Proceedings of the Symposium on Mollusca held at Cochin from January 12 to 16, 1968, vol. 1, 3 vol., Mandapam Camp: Marine Biological Association of India, 1968, pp. 170-187.

M. R.  Carriker and Yochelson, E. L., ?Recent gastropod boreholes and Ordovician cylindrical borings?, Geological Survey Professional Paper, vol. 593-B, pp. B1-B25, 1968.

B. R.  Baum, ?The problem of typifying certain names in Linnaeus's Systema naturae ed. 10?, Taxon, vol. 17, pp. 507-513, 1968.

M.  A. Keen, ?West American mollusk types at the British Museum (Natural History), IV. Carpenter's Mazatlan collection?, The Veliger, vol. 10, pp. 389-439, 1968.

K.  Nakazawa and Newell, N. D., ?Permian bivalves of Japan?, Memoirs of the Faculty of Science, Kyoto University, Series of Geology & Mineralogy, vol. 35, pp. 1-213, 1968.

V.  K. Rao, ?Pearl oysters of the Indian region?, in Proceedings of the Symposium on Mollusca held at Cochin from January 12 to 16, 1968, vol. 3, 3 vol., Mandapam Camp: Marine Biological Association of India, 1968, pp. 1017-1028.

L.  M. Vaillant, ?Remarques anatomiques sur les genres Vulsella et Crenatula de la fimille des Malléacées?, 1968.

K.  Wada, ?An electron microscope study of the formation of the periostracum of Pinctada martensii?, Journal of Electron Microscopy, vol. 17, p. 275, 1968.

K.  Wada, ?Cultured pearl and its structure?, in Proceedings of the Symposium on Mollusca held at Cochin from January 12 to 16, 1968, vol. 3, 3 vol., Mandapam Camp: Marine Biological Association of India, 1968, pp. 972-974.

C. M.  Yonge, ?Form and habit in species of Malleus (including the "hammer oysters") with comparative observations on Isognomon isognomon?, The Biological Bulletin, vol. 135, pp. 378-405, 1968.