美国地质调查叙词表 (USGS)
Descriptors 676, Nonpreferred terms 872, Scope notes 615, Descriptors 676 ; Nonpreferred terms 872 ; Scope notes 615..
Descriptors 676, Nonpreferred terms 872, Scope notes 615, Descriptors 676 ; Nonpreferred terms 872 ; Scope notes 615..