000			00335nam a2200145Ia 4500
008			200202s9999 xx 000 0 und d
082			_a530 PHY
245		0	_aPhysics
260			_aNew Delhi
260			_bNational Council of Education Research and Training
260			_c1985
300			_a380p.
650			_aPhysics
942			_cB
999			_c23818 _d23818