Farmer, W.M. (1978). Tambja and Roboastra (Mollusca: Opisthobranchia) from the Gulf of California and the Galapagos Islands. The Veliger. 20(4): 375-385.
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Farmer, W.M.
1978
<em>Tambja</em> and <em>Roboastra</em> (Mollusca: Opisthobranchia) from the Gulf of California and the Galapagos Islands