000 00218 a2200097 4500
001 2762
100 _aLock, J.B
245 _aA treatisc on elementary trig
260 _a
_bcambridge university
_c
090 _c2057
_d2057
942 _aNUST-CAE
_cM
_c11747
999 _c237835
_d237835