000 00246nam a2200097Ia 4500
008 190719s9999 xx 000 0 und d
100 _aR S Dahiya/ A D Gupta
245 0 _aBook on higher trigonometry
260 _aDelhi
_bLaxmi Pub
_c1982
942 _cBK
999 _c4235
_d4235