TY  - BOOK
AU  - Hefley,Gifford
TI  - THE DEVELOPMENT OF LORAN-C NAVIGATION AND TIMING
U1  - 621.384191 
PY  - 1972///
CY  - 
PB  - National Bureau Of Standards, Washington
KW  - Radio Telephone
KW  - Telecommunication
N1  - National Bureau Of Standards Monograph No.129
ER  -