TY  - BOOK
AU  - Ayres,Frank
TI  - Theory and problems of plane and spherical trigonometry
U1  - 514 18
PY  - 1954///
CY  - New York
PB  - Schaum Publishing
KW  - Problemas,ejercicios,etc
KW  - LEMB
KW  - Trigonometria
ER  -