TY  - BOOK
AU  - Aitken, R.
TI  - Teaching tenses: Ideas for presenting and practising tenses in English
SN  - 0175559201
U1  - 428.507 
PY  - 1992///
CY  - Edinburgh
PB  - Longman
KW  - English language
KW  - Grammar
KW  - Study and teaching
KW  - Business English
N1  - 001039; L 005
ER  -