Ching, Yu-Kan; Yang, De-Li. (1977). Phylum Brachiopoda, p. 303-470. In: Yang De-li, Ni Shi-zhao, Chang Mei-li, & Zhao, Ru-xuan, Palaeontologic Atlas of Central South China (Late Paleozoic Part), Volume 2. Geological Publishing House, Beijing.
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Ching, Yu-Kan; Yang, De-Li
1977
Phylum Brachiopoda, p. 303-470. In: Yang De-li, Ni Shi-zhao, Chang Mei-li, & Zhao, Ru-xuan, Palaeontologic Atlas of Central South China (Late Paleozoic Part), Volume 2