000 00330nam a2200157Ia 4500
008 190201s9999 xx 000 0 und d
020 _a852269366
082 _a530
082 _bRAO
100 _a"Rao, Narayana S V"
245 0 _aModern Physics
260 _aNew Delhi
260 _bW.E.L
260 _c1987
300 _a242
999 _c28707
_d28707