00000cam a22000004a 4500 UP-8027390931313467038 Buklod 20070912121842.0 m |o d | ta 070912s1987 xx d r |||| u| (iLib)UPVIS-00000017295 Gift agl/9/12/2013 eng QH 540 B68 1987 Botkin, Daniel B. Environmental studies earth as a living planet by Daniel B. Botkin, Edward A. Keller. 2nd ed. Columbus Merrill c1987. 675 pages. text rdacontent unmediated rdamedia volume rdacarrier Environmental ecology. FO UPVIS UPV-CFOS QH 540 B68 1987 Book