The Proterozoic Biosphere: A Multidisciplinary Study.
Edited by J. William Schopf and Cornelis Klein. Cambridge University Press: 1992. Pp. 1,348. £105, $195.
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Fairchild, I. Clues to early life. Nature 361, 601–602 (1993). https://doi.org/10.1038/361601b0
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DOI: https://doi.org/10.1038/361601b0