000 00305nam a2200121Ia 4500
008 221231s9999 xx 000 0 und d
100 _aPrakash S M
_94610
245 0 _aEnvironmental studies
260 _bElite publishers
300 _a304
650 _aElectronics and Communication
_94611
942 _cBE_BK
999 _c3612
_d3612