Interdisciplinary Communications Program, Conference on Origins of Life. Elkridge, Md., & Margulis, L. (1973). Chemistry and radioastronomy: Proceedings. Springer-Verlag.

Interdisciplinary Communications Program, Md Conference on Origins of Life. Elkridge, and Lynn Margulis. Chemistry and Radioastronomy: Proceedings. New York: Springer-Verlag, 1973.

Interdisciplinary Communications Program, et al. Chemistry and Radioastronomy: Proceedings. Springer-Verlag, 1973.