TY  - GEN
AU  - Pierce, John Alvin,
TI  - Loran, long range navigation
U1  - 621.384191,LOR 
PY  - 1948///
CY  - McGraw-Hill Book Co
PB  - New York
KW  - Pierce, John Alvin,
KW  - Loran, long range navigation
N1  - Part.1 The Loran System (Page-3), Part.2 Loran Equipment (Page-197)
ER  -