TY  - BOOK
AU  - Durell,Clement V.
AU  - Wright,R.M.
TI  - Elementary trigonometry
AV  - QA531 .D87 1947
PY  - 1958///
CY  - London
PB  - G. Bell & Sons
KW  - Trigonometry
N1  - "This book is issued complete and in three separate parts. Parts I. & II. are available bound together."-Prelimimary pages
ER  -