TY  - GEN
AU  - Premaratne , Geetha
AU  - De Abrew , Kamal 
TI  - Work book in professional English part 7-8 1st.  ed
U1  - 428 
PY  - 1984///
CY  - Nugegoda
PB  - Open University
KW  - ENGLISH LANGUAGE
KW  - ENGLISH USAGE
ER  -