$98.68
Riparia: Ecology, Conservation, and Management of Streamside Communities (Aquatic Ecology)
$19.10
Ecologies, Environments, and Energy Systems in Art of the 1960s and 1970s
Ecology, All Forms of Life in Relation to Environment, Official Publications of the Ecological Society of America, 1969, Ecology, Volume 50, Number 1 : .
Ecology of Populations, 1969, 135 pages with illustrations.