000 00337nam a2200145Ia 4500
008 230917s9999||||xx |||||||||||||| ||und||
040 _e30584
_aMAIN
041 _aEnglish
082 _a355 M315R
100 _aManmohan Bala
245 0 _aRaksha vigyan
260 _aDelhi
_bPrabhat Prakashan
_c1997
300 _a227 p.
942 _cBK
999 _c101223
_d101223