Columbia subject headings:
Earth sciences--Bibliography.
Earth sciences--Book reviews--Indexes.
Geography--Bibliography.
Geography--Book reviews--Indexes.
Harvard subject headings:
Earth sciences--Bibliography.
Earth sciences--Book reviews--Indexes.
Geography--Bibliography
Geography--Book reviews--Indexes.
Princeton subject headings:
Earth sciences--Bibliography.
Earth sciences--Book reviews--Indexes.
Geography--Bibliography.
Geography--Book reviews--Indexes.