000 00293nam a2200133Ia 4500
008 220421s9999||||xx |||||||||||||| ||und||
020 _c150
040 _aET
100 _aArora , B.L.
245 0 _aApplied Physics
260 _bSuhavi Pub.
_aNew India Pub.
500 _a59527
942 _cBK
999 _c65490
_d65490