TY  - BOOK
AU  - 
ED  - Annual Symposium on Frequency Control
TI  - 11th Annual Symposium on Frequency Control: proceedings..
U1  - 621.384136 
PY  - 1957///
CY  - N. J.
PB  - U. S. Army Signal Engineering Laboratories
KW  - Frequency Control-Congresses
KW  - Radio frequency -- Congresses
ER  -