Crosby , Alfred W.  . <br/><br/>
Ecological imperalism : the biological expansion of Europe 900-1900 /  
by Alfred W.Crosby. 
 - Cambridge :   Cambridge University Press ,   1992 
 - xiv, 368p :  
<br/><br/><label>ISBN: </label>0-521-45690-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>History
<br/><br/><label>Dewey Class. No.: </label>V5  / N2