000 00322nam a2200121Ia 4500
008 220201s1988 xx 000 0 eng d
082 _a621.3848
_bSEN
100 _aSen AK Bhattacharya AP
245 0 _aRADAR Systems and radio aids to navigation
260 _bKhanna Publishers Delhi
_c1988
300 _a324
942 _2ddc
999 _c25112
_d25112