000			00300nam a22001097a 4500
082			_a530 _bNCE.P
245			_aPhysics : _bscience for middle schools /
260			_aNew Delhi : _bNational Council of Educational Research and Training, _c1968.
300			_a151p. :
650			_aEducation
942			_cBK
999			_c632451 _d632451