00341nam a2200133Ia 4500008004100000041000800041082001600049100001900065245004800084260003600132300001200168365001000180650001700190210719s1995    xx            000 0 und d  aeng  a516.24 SHAF  aSHARMA (P N J)  aFirst course of elementary trigonometry. P1  aBangalorebN S Vasan & Coc1995  a534bPB  b5cRs  aTrigonometry