Ecological indicators /
McKenzie, Daniel H.
Hyatt, D. Eric.
McDonald, V. Janet.
International Symposium on Ecological Indicators(1990 :Fort Lauderdale, Fla.)
London : Elsevier Applied Science,
1992.
Proceedings of the International Symposium on Ecological Indicators, held Oct. 16-19, 1990, in Fort Lauderdale, Fla.
Includes bibliographical references and index.
Environmental indicators
Indicators (Biology)