TY  - BOOK
AU  - Spack Koch,Rachel
AU  - Folse,Keith S.
TI  - Focus on Grammar: An Integrated skills approach / Rachel Spack Koch
T2  - Workbook
SN  - 0131912771
U1  - 428 Sp116 
CY  - New York
PB  - Pearson Longman, 2006
KW  - GRAMMAR ENGLISH
N1  - Facultad English Teaching
ER  -