000 00392nam a2200157Ia 4500
008 180323s9999 xx 000 0 und d
082 _a507.1
100 _a   Singh, Y.K.
245 0 _aTeaching of general science
250 _a1st
260 _aNew Delhi
_bIndian Pub.House
300 _aNot covered syllabus
500 _a1977
650 _aGeneral science - teaching
942 _cBOOK
999 _c7784
_d7784