Tohutoro APA (7th ed.)
(1983). Contribution to the study of Dytiscidae. Finnish Zoological Publ. Board.
Tohutoru Kātū Chicago (17th ed.)
Contribution to the Study of Dytiscidae. Helsinki: Finnish Zoological Publ. Board, 1983.
Tohutoro MLA (9th ed.)
Contribution to the Study of Dytiscidae. Finnish Zoological Publ. Board, 1983.
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