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Marcus Ev. du B.-R. (1971 ["1970"]). Opisthobranchs from northern Brazil. Bulletin of Marine Science. 20: 922-951. [Stated date: Dec. 1970; true date: 28 Jan. 1971].
Marcus Ev. du B.-R. (1971 ["1970"]). Opisthobranchs from northern Brazil. Bulletin of Marine Science. 20: 922-951. [Stated date: Dec. 1970; true date: 28 Jan. 1971].
