000 00310nam a22001331a 4500
082 _a500.71
_bRCS/M
100 _aR C Sharma
245 _aModern science teaching/
_cby R C Sharma
260 _aDelhi:
_bDhanpat Rai,
_c1992.
300 _a400p.
650 _aScience Teaching
650 _aScience
942 _cBK
999 _c29230
_d29230