Author:

Schopf,J.W.;Ford,T.D.;Breed,W.J.

Year:

1973

Title:

Microorganisms from the Late Precambrian of the Grand Canyon, Arizona.

Reference:

Schopf,J.W. et al. (1973) Microorganisms from the Late Precambrian of the Grand Canyon, Arizona. Science Vol. 179 # 4080 P. 1319- 1321

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