Ecological imperialism : the biological expansion of Europe, 900-1900 / Alfred W. Crosby. Crosby, Alfred W. Human ecology. Europeans Migrations. Human geography. Biogeography. GF50 .C76 1986 304.2 CRE Includes index. Bibliography: p. 312-360. Cambridge [Cambridgeshire] ; New York : Cambridge University Press, 1986. 1986. 1986 Text xiv, 368 p., [16] p. of plates : http://www.loc.gov/catdir/description/cam023/86006106.html eng Studies in environment and history