000 00413nam a2200169Ia 4500
008 200101s9999||||xx |||||||||||||| ||und||
020 _c125
082 _a515.8 RAI
100 _aRai, Singhania, M. D.
245 0 _aSimplified course in trigonometry
260 _aNewDelhi
260 _bSultan Chand & Sons Pvt. Ltd.
260 _c1999
300 _a530 pp.
650 _aMathematics
700 _aSaxena, H. C.
999 _c431
_d431