Botkin, Daniel B. Environmental science Earth as a living planet Daniel B. Botkin, Edward A. Keller - 3rd ed. - New York John Wiley & Sons c2000 - xxxii, 649, [52] s. fotogr., il., mp., sch., tab Bibliogr. odkazy, literatúra, register, slovník ISBN: 0471321737 679.00 Universal Decimal Class. No.: 502 504