TY  - RPRT
TI  - Mars deep drill : a mission concept for the next decade
AU  - Beaty, David W.
AU  - Miller, Sylvia L.
AU  - Essmiller, John C.
PY  - 2004
UR  - https://ntrs.nasa.gov/citations/20210005697
ID  - 20210005697
ER  -