000 00215 a2200097 4500
001 18916
100 _aHobson E W
245 _aTreatise on plane trigonometry
260 _a
_bCambridge
_c1928
090 _c14005
_d14005
942 _aNUST-CAE
_cM
_c4454
999 _c253989
_d253989