CHRISTIANSEN, F.B. Fenchel, T.M. Theories of polulations in biological communities /[by] Christiansen, F.B., T.M.Fenchel - New York Springer-Verlag Berlin Heidelberg 1977 - vii, 144 p. Includes references and index. ISBN: 3540080104 Dewey Class. No.: 574.52 / CHI