TY  - BOOK
AU  - Ymas, Sergio E.
TI  - Differential calculus and application in business and economics, engineering and social science (wider perspective)
SN  - 685-876-94136-1-9
U1  - Fil. 525 Y15 C2012 
PY  - 2012///
CY  - Philippines
PB  - Sta. Monica Printing Corp.
ER  -