Calvin, Melvin. Chemical evolution : molecular evolution towards the origin of living systems on the earth and elsewhere /by Melvin Calvin - New York : Oxford University, c1969 - ix, 278 p. : ilus., gráfs., cuadros LCCN: 97926 Subjects--Topical Terms: Evolución.Química.Vida--Origen. Dewey Class. No.: 575 / C13