TY  - BOOK
AU  - Baltazar, Ethel Cecille M.
TI  - Plane and spherical trigonometry: text/workbook 
SN  - 9789719801641
AV  - FIL QA 531 B35 2014
PY  - 2014///
CY  - Quezon City
PB  - C & E Publishing, Inc.
KW  - Plane and spherical trigonometry
N1  - In; Includes bibliographical references
ER  -