FishBase References for Heckman, C.W., 1991

Ref. No.	Title
10432	Alosa pontica kessleri (Grimm 1887).	10535	Clupeonella cultriventris cultriventris (Nordmann 1840).	10550	Alosa caspia caspia (Eichwald 1838).	10560	Alosa caspia knipowitschi Iljin 1927).

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