TY  - BOOK
AU  - Crowder,Norman A.
AU  - Martin,Grace C.
AU  - Goodman,Richard
TI  - Trigonometry : : a first course 
U1  - 516.24 23
PY  - 1962/// [Impression 1968]
CY  - London
PB  - English Universities Press
KW  - Trigonometry
N1  - Includes index.
ER  -