TY  - RPRT
TI  - Four hour lunar normal and alternate missions Preliminary study
AU  - Beattie, D. A.
AU  - Davin, E.
AU  - Lowman, P. D., Jr.
PY  - 1964
UR  - https://ntrs.nasa.gov/citations/19660009388
ID  - 19660009388
ER  -