Author:

Barghoorn,E.S.;Schopf,J.W.

Year:

1966

Title:

Microorganisms three billion years old from the Precambrian of South Africa.

Reference:

Barghoorn,E.S. et al. (1966) Microorganisms three billion years old from the Precambrian of South Africa. Science Vol. 152 # 3723 P. 758- 763

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