000 00256nam a2200109Ia 4500
100 _aSingh, U.K. & Sudarshan, K. N.
942 _cBK
245 _aQuality Education
260 _aDiscovery Pub House, New Delhi
_c1996
082 _asvt Sin
300 _avi, 306
999 _c32739
_d32739