000 00218 a2200097 4500
001 43070
100 _aKells, L.M
245 _aPlane spherical trigonometry
260 _aLondon
_bMcGraw Hill
_c
090 _c26928
_d26928
942 _aNUST-CAE
_cM
_c18811
999 _c278143
_d278143