TY  - BOOK
AU  - Briggs,William
AU  - Bryan, G. H.
TI  - The tutorial trigonometry
U1  - 514 23
PY  - 1928/// [ Reprinted 1957 ]
CY  - London
PB  - W.B. Clive
KW  - Trigonometry
N1  - "Answers": p. 315-324
ER  -