TY  - BOOK
AU  - Schoenberg,Irene
TI  - Focus on grammar: An integrated skills approach: Workbook 
SN  - 0131899848 (v. 3 : student book : alk. paper)
PY  - 2006///
CY  - White Plains, NY
PB  - Pearson Longman
KW  - English language
KW  - Textbooks for foreign speakers
KW  - Grammar
KW  - Problems, exercises, etc
ER  -