TY  - BOOK
AU  - Willis,David
TI  - Collins Cobuild student's grammar: self-study edition with answers 
SN  - 0003705633
U1  - 428.24 COL 1991 
PY  - 1991///
CY  - Glasgow
PB  - HarperCollins Publisher
KW  - English language
KW  - Grammar
KW  - 1950-
KW  - Problems, exercises, etc
ER  -