000 005040000a22001930004500
008 170420t1988 xxu||||| |||| 00| 0 eng d
020 _a0408011912
041 _aeng
080 _a621.396.96
_bS6
942 _cBK
100 _aSonnenberg, G.J.
245 _aRadar and electronic navigation
250 _a6th ed.
260 _aLondon
_bButterworths
_c1988
300 _a[8], 368p. : ill., maps, photos., tables
500 _aIndex included
650 _aELCTRONICS IN NAVIGATION
650 _aRADAR
999 _c63494
_d63494