TY  - RPRT
TI  - Spherical rocket motors for space and upper stage propulsion.
AU  - Andrews, W. G.
AU  - Dougherty, L. S.
AU  - Reed, D. R.
PY  - 1968
UR  - https://ntrs.nasa.gov/citations/19680063264
ID  - 19680063264
ER  -