Investigating aquatic ecosystems /
Andrews, William A.
Investigating aquatic ecosystems / William A. Andrews, Sandra J. McEwan - 2nd ed. - Ontario : Prentice-Hall 1987 - 342 p. : ill. ; 24 cm - (Contours: Studies of the Environment) .
Includes index
013503129X
Ecosystems
574.5263 / AND
Investigating aquatic ecosystems / William A. Andrews, Sandra J. McEwan - 2nd ed. - Ontario : Prentice-Hall 1987 - 342 p. : ill. ; 24 cm - (Contours: Studies of the Environment) .
Includes index
013503129X
Ecosystems
574.5263 / AND