000 00343nam a2200145Ia 4500
008 150416s9999||||xx |||||||||||||| ||und||
082 _a371.3028 SIN
100 _a"Singh , Uttam Kumar"
245 _aTeaching Of Science
250 _a2005
260 _bCommonwealth Pub
300 _a371.3028 SIN
600 _aEducation
942 _2ddc
_cBK
999 _c5675
_d5675