TY  - BOOK
TI  - Radar aids to navigation
AV  - TK6575 .H3
U1  - 623.893 
PY  - 1947///
CY  - New York
PB  - McGraw-Hill Book Co.
KW  - Radar
KW  - Navigation
KW  - Loran
N1  - Includes bibliographical references and index
ER  -