TY  - BOOK
AU  - Ponnamperuma,Cyril
ED  - College Park Colloquium on Chemical Evolution
ED  - University of Maryland, College Park.
TI  - Chemical evolution of the early Precambrian
SN  - 0125613601
PY  - 1977///
CY  - New York
PB  - Academic Press
N1  - Organized by the Laboratory of Chemical Evolution, University of Maryland
ER  -