TY  - BOOK
AU  - Opetina, Leandro N.
AU  - Leandro N. Opetina
TI  - Grammar at work : for college freshmen
SN  - 9789710445141
U1  - Fil. 425 Op61g 2007 
PY  - 2007///
CY  - Manila : 
PB  - Mindshapers Co., Inc., 
KW  - 1. English language-Grammar
N1  - Includes bibliographical references

ER  -