TY  - RPRT
TI  - Atmospheric density variations at 140 km deduced from precise satellite radar track ing data
AU  - De Vries, L. L.
AU  - Schusterman, L.
AU  - Bruce, R. W.
PY  - 1971
UR  - https://ntrs.nasa.gov/citations/19710024828
ID  - 19710024828
ER  -