000			00324nam a2200133Ia 4500
005			20260720174545.0
008			260720s2004 xx 000 0 und d
041			_aeng
082			_a500.7 RAOS
100			_aRao, V K _9268125
245			_aScience education
260			_aNew Delhi _bA P H Publishing _c2004
300			_a307p
999			_c242203 _d242203