TY  - BOOK
AU  - Mackin, Ronald.
TI  - Exercises in English patterns and usage: key to books 1to 5 
SN  - EUROPEAN121
U1  - 428.24 
PY  - 1968///
CY  - London
PB  - Oxford University Press
KW  - -----0-English language-Composition and exercises.-----
N1  - ----
ER  -