00698nam0-22002771i-450-99000055740040332120001010000055740FED01000055740(Aleph)000055740FED0100005574020001010d--------km-y0itay50------baitay-------001yyRadar and electronic navigationG. J. Sonnenberg4. ed.LondonButterworths197023 cm312 p.Sonnenberg,G. J.ITUNINARICAUNIMARCBK99000055740040332105 68 771826DININDININUNINAING01