TY  - RPRT
TI  - Scientific exploration of comets - A mission study.
AU  - Giddis, A. R.
AU  - Jensen, R. C.
AU  - Walton, R. R.
PY  - 1966
UR  - https://ntrs.nasa.gov/citations/19670052021
ID  - 19670052021
ER  -