000			00334nam a2200157Ia 4500
008			210608s2020 xx 000 0 und d
020			_a9789390506279
041			_aeng
082			_a530/DHA.
100			_aDhas V.K.
245			_aOptics swm.IV
250			_a1st
260			_bNirali _c2020
300			_a208
650			_aPhysics
999			_c285827 _d285827