000 00277nam a22001097a 4500
020 _a9789813207103
082 _a516.24
_bDEL.T
100 _aDelbourgo, Roger
245 _aTrignometry
_bNotes problems and exercises
260 _aNew Jersy
_bWorld Scientific
_c2017
942 _cBK
999 _c448735
_d448735