TY  - RPRT
TI  - New constraints on Precambrian ocean composition.
AU  - J P Grotzinger
AU  - J F Kasting
PY  - 1993
DO  - 10.1086/648218
UR  - https://pubmed.ncbi.nlm.nih.gov/11537740/
ID  - 11537740
ER  -