TY  - GEN
TI  - ELECTRON TUBE LIFE FACTORS
U1  - 621.38151 
PY  - 1959///
CY  - N. J.
PB  - Engineering Pub.
KW  - Electron Tubes. I. U. S. Army Signal Research & Developments Laboratory, Fort Monmouth, N. J
N1  - Label On T. P. : Trade Distributors : Reinhold Pub. Corp., N. Y. Chapman & Hall, London
ER  -