Protection fails to stem amphibian decline.
Williams
Nigel
N
D000663:Amphibians / Q000145:classification / Q000502:physiology*; D000818:Animals; D044822:Biodiversity; D003247:Conservation of Natural Resources; D003364:Costa Rica; D053476:Extinction, Biological; D011156:Population Density; D012104:Reptiles / Q000145:classification / Q000502:physiology