000 00281nam a2200121Ia 4500
100 _aSen A K
245 _aRadar Systems and Radio Aids to Navigation
250 _a1
260 _c1988
_bKHANNA PUBLISHERS
_aDelhi
300 _axiv+318
700 _aBhattacharya A B
942 _cBK
999 _c17830
_d17830