TY  - BOOK
AU  - Salumbides,Epifanio JrN.
AU  - Romero,Rufo C.
TI  - Trigonometry: Plane and spherical
SN  - 9718609008
PY  - 1963///
CY  - Quezon City
PB  - Royal Publishing House, Inc
N1  - Includes bibliographical references and index
ER  -