000			00374 a2200145 4500
020			_a8120700406
090			_c5247 _d5247
100			_aDas R.C.
245			_aScience teaching in schools
250			_aLow price
260			_aNew Delhi: _bSterling, _c1985.
300			_axv, 264p. _bill.
650			_aScience - Study and teaching _aTeaching
942			_cBK _kQ181 .S44 D37x 1985
999			_c5247 _d5247