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Cheltsova, N. A. (1969). Znacheniye mikrostruktury rakovin melovykh ustrits dlya ikh sistematiki [Significance of the shell microstructure of Cretaceous oysters for their taxonomy]. Nauka, Moskva, 103 pp.
Cheltsova, N. A. (1969). Znacheniye mikrostruktury rakovin melovykh ustrits dlya ikh sistematiki [Significance of the shell microstructure of Cretaceous oysters for their taxonomy]. Nauka, Moskva, 103 pp.