000			00340nam a2200157Ia 4500
008			131111s9999 xx 000 0 und d
100			_aMaitra, Krishna
245			_aTeaching of physics
260			_aNew Delhi
260			_bDiscovery P H
260			_c1991
300			_a169p.
650			_aEducation
763			_a2384
942	0	0	_01
999			_c51092 _d51092