000 00217 a2200097 4500
001 18954
100 _aTodhunter & leathman
245 _aSpherical trigonometry
260 _a
_bMacmillan
_c1925
090 _c14042
_d14042
942 _aNUST-CAE
_cM
_c4495
999 _c254027
_d254027