000 00256nam a2200109Ia 4500
100 _aSingh, U.K. & Sudarshan, K. N.
942 _cBK
245 _aPrimary Education
260 _aDiscovery Pub House, New Delhi
_c1996
082 _asvt Sin
300 _avi, 364
999 _c36990
_d36990