TY  - BOOK
AU  - Richard, 
AU  - 
TI  - What's the difference ?
T2  - Learning tree 1 2 3
SN  - 1855344637
U1  - 372.076 23
PY  - 1991///
CY  - New Lanark : 
PB  - Geddes & Grosset Ltd , 
ER  -