Freshwater ecology :
Jeffries, Mike J., 1958-
Freshwater ecology : principles and applications / Michael Jeffries and Derek Mills. - London ; New York : Belhaven Press, 1990. - viii, 285 p. : ill., maps ; 24 cm.
1852930217 : �27.50 1852931272 (pbk.) : �8.95
Freshwater ecology.
Nature--Effect of human beings on.
574.52632
Freshwater ecology : principles and applications / Michael Jeffries and Derek Mills. - London ; New York : Belhaven Press, 1990. - viii, 285 p. : ill., maps ; 24 cm.
1852930217 : �27.50 1852931272 (pbk.) : �8.95
Freshwater ecology.
Nature--Effect of human beings on.
574.52632