Columbia subject headings:
Natural history--Soviet Union.
Naturalists--Biography.
Pallas, Peter Simon, 1741-1811--Bibliography.
Pallas, Peter Simon, 1741-1811.
Harvard subject headings:
Earth sciences.
Pallas, Peter Simon, 1741-1811
Pallas, Peter Simon, 1741-1811.
Scientists--Germany--Biography
Zoology.
Princeton subject headings:
Natural history--Soviet Union.
Naturalists--Biography.
Pallas, Peter Simon, 1741-1811--Bibliography.
Pallas, Peter Simon, 1741-1811--Biography.