Major events in the history of life - Schopf, William J. 1941 (Jones and Bartlett, 1992)
Proceedings from a symposium convened by the IGPP Center for the Study of Evolution and the Origin of Life at the University of California, Los Angeles, held January 11, 1991.
"A contribution of the IGPP Center for the Study of Evolution and the Origin of Life (CSEOL), University of California, Los Angeles"--T.p. verso.