TY  - RPRT
TI  - On microbial contaminants, micropseudofossils, and the oldest records of life
AU  - P. Cloud
AU  - K. Morrison
PY  - 1979
DO  - 10.1016/0301-9268(79)90052-4
UR  - https://pubs.usgs.gov/publication/70012486
ID  - 70012486
ER  -