000 00292nam a2200121Ia 4500
008 170101s1994 xx 000 0 und d
082 _a535 RAY
100 _aRaychaudhury, D.P.
245 0 _aLight, for degree students
260 _aKolkata
_bChayan
_c1994
300 _a394p.
942 _2ddc
_cBK
999 _c1431
_d1431