TY  - BOOK
AU  - Azar,Betty Scrampfer
TI  - Understanding and using English grammar: a reference grammar 
SN  - 0139482334
AV  - PE1128 .A973 1993
U1  - 428.24 
PY  - 1993///
CY  - Englewood Cliffs, N.J.
PB  - Prentice Hall Regents
KW  - English language
KW  - Textbooks for foreign speakers
KW  - Grammar
KW  - Problems, exercises, etc
ER  -