Crosby, Alfred W. <br/><br/>
The Colombian exchange :  biological and cultural consequences of 1492  / 
Alfred W. Crosby. 
 - Westport,  Connecticut :  Greenwood Press,  1972. 
 - xv, 268 p. ;  21 cm. 
<br/><br/>Includes bibliographical references (p.222-260) and index. 
<br/><br/><label>ISBN: </label>0837158214 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Indians--Health and hygiene.<br/>Indians--Agriculture.<br/>Biogeography.<br/>Medical geography--History.
<br/><br/><label>Dewey Class. No.: </label>574.5