TY  - RPRT
TI  - Comparative evaluation of existing expendable upper stages for space shuttle
AU  - Weyers, V. J.
AU  - Sagerman, G. D.
AU  - Borsody, J.
AU  - Lubick, R. J.
PY  - 1974
UR  - https://ntrs.nasa.gov/citations/19740022194
ID  - 19740022194
ER  -