000 00498nam a2200145Ia 4500
008 190328s9999||||xx |||||||||||||| ||und||
040 _aNITIL
_cNITIL
082 _221st
_a502
_bN277G
110 _aNational Council of Educational Research and Training
245 0 _aPrathmik kakshaon ke liye samanya vigyan
260 _aNew Delhi
_bNational Council of Educational Researh and Training
_c1972
300 _a3v (V.p)
650 _aScience; Education, Primary; Science-Study and teaching
942 _cBKS
999 _c8948
_d8948