00464pamaa2200157 4500 0000033111 20070202090000.0 0684813262 QH331 MAR 1995 MARGULIS What is life? Lynn Margulis and Dorion Sagan; foreword by Niles Eldredge. New York: Simon and Schuster, 1995. 207p.: col. ill.; 30cm. Life (Biology) Biology -- Philosophy Sagan, Dorion