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Occurrence points for 16 amphibian species: (a) H. japonica; (b) K. borealis; (c) G. rugosa; (d) L. catesbeianus; (e) P. chosenicus; (f) P. nigromaculatus; (g) R. coreana; (h) B. orientalis; (i) B. gargarizans; (j) H. leechii; (k) H. qualpartensis; (l) R. dyboskii; (m) B. stejnegeri; (n) K. koreana; (o) O. koreanus; (p) R. huanrenensis.
