Botkin, Daniel B. <br/><br/>Environmental science: earth as a living planet  earth as a living planet/ Daniel B. Botkin, Edward A. Keller.  - xxvii, 668 pages:  with illustrations;  25 cm. <br/><br/>Includes index. <br/><br/><label>ISBN: </label>9814126985 <br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental science.<br/><br/><label>LC Class. No.: </label>QI 81  / .B7495 2003