TY  - RPRT
TI  - Atmospheric carbon dioxide concentrations before 2.2 billion years ago
AU  - Rye, R.
AU  - Kuo, P. H.
AU  - Holland, H. D.
PY  - 1995
UR  - https://ntrs.nasa.gov/citations/20040112220
ID  - 20040112220
ER  -