TY  - RPRT
TI  - Space program payload costs and their possible reduction
AU  - Vanvleck, E. M.
AU  - Deerwester, J. M.
AU  - Norman, S. M.
AU  - Alton, L. R.
PY  - 1973
UR  - https://ntrs.nasa.gov/citations/19730008108
ID  - 19730008108
ER  -