Likharev B.K. (1967). Skafopody i gastropody verkhnego Paleozoya Yuzhnoi Ferghany (Scaphopods and Gastropods - Archaeogastropoda (excepting suborder Bellerophontina and suborder Neritopsina) from the upper Paleozoic of southern Fergana). Trudy Vsesoyuznogo Naucho-Issledovatelskogo geologicheskogo Instituta. [in Russian]. 116:1-79.
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Likharev B.K.
1967
Skafopody i gastropody verkhnego Paleozoya Yuzhnoi Ferghany (Scaphopods and Gastropods - Archaeogastropoda (excepting suborder Bellerophontina and suborder Neritopsina) from the upper Paleozoic of southern Fergana).