TY  - RPRT
TI  - Was early Mars warmed by ammonia?
AU  - Kasting, J. F.
AU  - Brown, L. L.
AU  - Acord, J. M.
AU  - Pollack, J. B.
PY  - 1992
UR  - https://ntrs.nasa.gov/citations/19920019787
ID  - 19920019787
ER  -