TY  - RPRT
TI  - PROSPECTS FOR EARLY MANNED INTERPLANETARY FLIGHTS
AU  - Gillespie, R. W.
AU  - Ragsac, R. V.
AU  - Ross, S. E.
PY  - 1963
UR  - https://ntrs.nasa.gov/citations/19630024206
ID  - 19630024206
ER  -