Vialov, O. & Manouilenko, O. 1939. Les oursins paléogènes du Fergana. Problems of Paleontology, Publications of the Laboratory of Paleontology (Moscow University) 5, 147-176.
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Vialov, O.; Manouilenko, O.
1939
Les oursins paléogènes du Fergana
Problems of Paleontology, Publications of the Laboratory of Paleontology