00337nam a2200121Ia 4500008004100000082001800041100001900059245003200078260004200110300001000152630001800162650003500180211109s9999||||xx |||||||||||||| ||und|| a516.24bNIX-E aNixon, R C G,  0aElementry Plane Trignometry bOxford University PressaBombayc1900 a256p. xGeneral Stack aGEOMETRYvSciencexMathematics