00619nam a2200181 a 450000500170000008200170001710000210003424500740005526000480012930000250017750000500020269000500025269000210030296400250032399700120034899900150036095200620037520251203090505.0  a577.094bCRO  aCrosby, Alfred W  aEcological imperialism:bthe biological expansion of Europe, 900-1900  aCambridgebCambridge University Pressc1986  axiv,368p.c23 cmbPB  aincludes bibliographical references and index  aHuman Ecology-Migration-plants-Europe-History  aAnimal migration  bENGc100de010fg_  a19400 C  c9465d9465  00104070aPUbPUd1998-04-08l0o577.094 CROp19400yBK