000 00283nam a2200133Ia 4500
100 _aKHANNA N K
650 _aTrigonometry
365 _cRS
365 _d1
942 _cENGBK
245 _aSpherical Trigonometry
260 _bJai Prakash Nath & Co.
_c1960
_aMeerut
300 _a176 pp
999 _c3836
_d3836