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024 _a7595
037 _cTheses
040 _aCRL
_cCRL
_beng
041 _2eng
_aeng
100 _aSangal P.P.
_9527664
110 _aUniversity of Delhi. Faculty of Mathematical Sciences. Department of Mathematics
245 0 _aAir efence systems and coverage problems
260 _c1969
650 _aMATHEMATICS
700 _aUniversity of Delhi. Faculty of Mathematical Sciences. Department of Mathematics
942 _cDIS
_2CC
999 _c861499
_d861499