TY - BOOK TI - The Columbian Exchange: Biological and Cultural Consequences of 1492 U1 - Essential AU - Alfred W. Crosby UR - https://books.google.co.uk/books?redir_esc=y&id=n-y_bn3ZM4EC&q=pestilencia#v=snippet&q=pestilencia&f=false SN - 8073 ER -