000 00294nam a2200121Ia 4500
008 190829s9999 xx 000 0 und d
082 _a535
_bSAR/OP
100 _aSARBHAI, K.P.
100 _aSEHGAL, N.K.
245 0 _aOPTICS
260 _bSultan Chand and Sons, Delhi
_aDelhi
_c1973
942 _cBK
999 _c9429
_d9429