Crosby, Alfred W. <br/><br/>
Ecological imperialism  the Biological Expansion of Europe 900-1900 
Alfred W. Crosby 
 - Cambridge :  Cambridge University Press,  1986 
 - 180 p. ;  22 cm. 
<br/><br/><label>ISBN: </label>0521320097 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology<br/>Europeans--Migrations<br/>Anthropo--geography<br/>Biogeography