TY  - BOOK
AU  - Schopf,J.William
TI  - Earth's earliest biosphere: its origin and evolution 
SN  - 0691083231
PY  - 1983///
CY  - Princeton, N.J.
PB  - Princeton University Press
KW  - Paleontology
KW  - PreCambrian
N1  - Bibliography : p. 464-531
ER  -