TY  - BOOK
T1  - Schaum's outline of theory and problems of plane and spherical trigonometry.
DA  - [c1954]
CY  - New York,
AU  - Ayres, Frank,
CN  - QA531
CN  - QA531
PB  - McGraw-Hill
PP  - New York,
PY  - [c1954]
ID  - 6023
KW  - Trigonometry.
TI  - Schaum's outline of theory and problems of plane and spherical trigonometry.
ER  -