00254nam a2200097Ia 4500008004100000082001700041100003000058245002800088264003200116300000800148200527s9999||||xx |||||||||||||| ||und||  a516.24 HAL K  aHall, H.S. , Knight, S.R. 0aElementary Trigonometry  bThe Macmillan Companyc1967  a443