TY  - RPRT
TI  - Two-step rocket engine bipropellant valve Patent
AU  - Capps, J. E.
AU  - Ferguson, R. E.
AU  - Pohl, H. O.
PY  - 1969
UR  - https://ntrs.nasa.gov/citations/19700012887
ID  - 19700012887
ER  -