Columbia subject headings:
Amphibian declines.
Frogs--Conservation.
Frogs--Identification.
Herpetological surveys--History.
Moore, Robin, 1975---Travel.
Rare amphibians--Identification.
Harvard subject headings:
Amphibian declines.
Frogs--Conservation.
Frogs--Identification.
Herpetological surveys--History.
Moore, Robin, 1975---Travel.
Rare amphibians--Identification.
Toads--Conservation.
Toads--Identification.
Princeton subject headings: