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The ancient caves of Szechwan Province, China
Date:
1932
Citation:
Graham, David Crockett. 1932. "The ancient caves of Szechwan Province, China." Proceedings of the United States National Museum. 80 (2916):1–13, 14 figs., 16 pls.. https://doi.org/10.5479/si.00963801.80-2916.1
