TY  - BOOK
AU  - AYRES (Frank)
TI  - Theory and problems of plane and spherical trigonometry
U1  - 512/1 
PY  - 1954///
CY  - New York
PB  - Schaum Publishing Co
KW  - trigonometry
KW  - Theory
KW  - spherical
KW  - problems
KW  - plane
KW  - of
KW  - and
ER  -