TY  - RPRT
TI  - Improved liquid-level sensor for cryogenics
AU  - Hyman, L. G.
AU  - Sheppard, J. F.
AU  - Spinka, H.
PY  - 1969
UR  - https://ntrs.nasa.gov/citations/19690000210
ID  - 19690000210
ER  -