000 00266nam a2200121Ia 4500
008 160122s9999 xx 000 0 und d
041 _aEnglish
100 _aR K Gupta
245 _aDynamics
260 _bDelhi:Krishna
_c1990
300 _a448p.
650 _aElectronic
999 _c5062
_d5062