TY  - BOOK
AU  - Roberts,J.M.
TI  - Different worlds
SN  - 0582359465 (Longman)
U1  - 909 
PY  - 1980///
CY  - Harmondsworth, Middlesex, England, New York, N.Y.
PB  - Penguin Books, Distributed by Longman
ER  -