TY  - BOOK
AU  - Martinet,A.V.
TI  - Practical english grammar 
SN  - 0194313484 (paperback)
PY  - 1986///
CY  - Oxford
PB  - Oxford University Press
N2  - This is a clear, comprehensive reference grammar
UR  - http://www.amazon.com/exec/obidos/ASIN/0194313484/chopaconline-20
ER  -