@book{21342,
	author = {Rigler, Frank H. (Late) and Kinne, Otto.},
	title = {Ecology, potentials and limitations / },
	publisher = {Ecology Institute, },
	year = { ©1998.},
	series = {Science and Limnology, },
	address = { F.R. Germany : },
	note = {Includes Index. }
}