Stuart S. N., Chanson J. S.; 외. (2004). “Status and trends of amphibian declines and extinctions worldwide”. Science306 (5702): 1783–1786. doi:10.1126/science.1103538. PMID15486254.
Stuart S. N., Chanson J. S.; 외. (2004). “Status and trends of amphibian declines and extinctions worldwide”. Science306 (5702): 1783–1786. doi:10.1126/science.1103538. PMID15486254.