000 00320nam a2200121Ia 4500
008 220421s2012 xx 000 0 und d
020 _a8176489425
041 _aeng
082 _a507
_bJOS/TEA
100 _aJoshi, S. R.
_9574370
245 _aTeaching of Science
260 _aNew Delhi
_b APH Publisher Corporation
_c2012
999 _c400749
_d400749