00975cam a2200265 4500 758826590 TxAuBib 20140219120000.0 130717s2014||||||||||||||||||||||||eng|u 2013028683 9780805092998 hardback $28.00 0805092994 hardback $28.00 DLC eng DLC rda NjBwBT TxGR TxAuBib Kolbert, Elizabeth. The sixth extinction [Book] : an unnatural history / Elizabeth Kolbert. First edition. New York : Henry Holt and Company, 2014. 319 pages : illustrations ; 25 cm. Includes bibliographical references (pages 293-304) and index. 20140219. Mass extinctions. Extinction (Biology.) Environmental disasters. RV8