000 00291nam a2200121Ia 4500
008 190216s9999||||xx |||||||||||||| ||und||
100 _aDas Gupta And Prasad
245 0 _aDegree Level Trigonometry
260 _bBarathi Bavan
_c1989
300 _a238p
650 _aMathematics
942 _cBK
999 _c30984
_d30984