Proceedings of the fourth bconference on origins of life : chemistry and radioastronomy / Edited by Lynn Margulis. Conference on Origins of Life, 4th, Elkridge, Md., 1971. Margulis, Lynn, 1938-2011, ed. Interdisciplinary Communications Program. Life Origin Congresses. Cosmochemistry Congresses. Interstellar matter Congresses. QH325 .C77 1971 574.192 MAP "This conference was organized and conducted by the Interdisciplinary Communications Program of the Smithsonian Institution and was supported by the National Aeronautics and Space Administration under contract number NSR-09-015-044." Includes bibliographical references and index. New York : Springer-Verlag, 1973. 1973. 1973 Text xvi, 291 p. : eng