Skinner, Brian J., 1928- The blue planet : an introduction to earth system science / Brian J. Skinner, Stephen C. Porter, Daniel B. Botkin - 2nd ed. - New York : John Wiley & Sons, Inc., 1999 - 552 p. : ill. ; 28 cm. ISBN: 0471161144 RM324.61 LCCN: 98-031972 Subjects--Topical Terms: EarthEarth sciences