Lees, Graham D., 1947- Handbook for marine radio communication / Graham D. Lees and William G. Williamson. - 3rd ed. - London : LLP Reference Publishing, 1999. - xxxiii, 396 p. : ill. ; 22 cm. + pbk. Includes index. ISBN: 1859786723 Subjects--Topical Terms: Radio in navigation.Aids to navigation. Dewey Class. No.: 623.8564