TY  - BOOK
ED  - United States.
TI  - Navigational and traffic aids: design manual 23.2 
U1  -  623.8940973 
PY  - 1979///
CY  - Washington
PB  - The Department
KW  - Navigation
KW  - Tables
KW  - United States
KW  - Notices to mariners
ER  -