Nybelin, O. (1976). On the so-called postspiracular Bones in Crossopterygians, Brachiopterygians and Actinopterygians. Kungl. Vetenskaps-och Vitterhets-Samhället.
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Tohutoru Kātū Chicago (17th ed.)
Nybelin, Orvar. On the So-called Postspiracular Bones in Crossopterygians, Brachiopterygians and Actinopterygians. Göteborg: Kungl. Vetenskaps-och Vitterhets-Samhället, 1976.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
Tohutoro MLA (9th ed.)
Nybelin, Orvar. On the So-called Postspiracular Bones in Crossopterygians, Brachiopterygians and Actinopterygians. Kungl. Vetenskaps-och Vitterhets-Samhället, 1976.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
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