000 00291nam a2200121Ia 4500
008 190719s9999 xx 000 0 und d
082 _a539 S4561
100 _aSEHGAL
245 0 _aMODERN PHYSICS
260 _aNEW DELHI
_bS. Chand Publishing
_c1980
300 _a22X14 400
942 _cBK
_2DDC
999 _c46723
_d46723