TY  - BOOK
AU  - H.S. Hall
AU  -  S.R. Knight, 
TI  - Elementary trigonometry
U1  - 516.24 
PY  - 1952///
CY  - London
PB  - Macmillanand Co. ltd
N1  - H.S. Hall & S.R. Knight: Elementary trigonometry.  London.  Macmillanand Co. ltd, 1952.--(516.24HAL)
ER  -