TY  - RPRT
TI  - Scientific exploration of comets - A mission study.
AU  - Giddis, A. R.
AU  - Jensen, R. C.
AU  - Walton, R. R.
PY  - 1965
UR  - https://ntrs.nasa.gov/citations/19660036613
ID  - 19660036613
ER  -