TY  - BOOK
AU  - Heaton,J.B.(John Brian).
TI  - Longman preliminary english skills: a skills and practice course for the Cambridge preliminary english test 
SN  - 0-582-01843-9
AV  - PE1128 .A2 H438
PY  - 1990///
CY  - England
PB  - Longman (reimp. 1991)
ER  -