TY  - RPRT
TI  - Extraterrestrial engineering
AU  - Sture, Stein
AU  - Ko, Hon-Yim
AU  - Macari-Pasqualino, Jose Emir
AU  - Perkins, Steven W.
PY  - 1989
UR  - https://ntrs.nasa.gov/citations/19940004206
ID  - 19940004206
ER  -