Watts, David, 1935- Principles of biogeography / David Watts. - New York : McGraw-Hill, [1971] - xvi, 401 p. : ill. ; 23 cm. - McGraw-Hill series in geography . Includes bibliographies. ISBN: 0070941459 LCCN: 70156940 Subjects--Topical Terms: Biogeography. LC Class. No.: QH84 / .W36 Dewey Class. No.: 574.9 / WAP 1971