TY  - BOOK
AU  - Maule,David
TI  - Inventions that changed the world / Level 4
SN  - 1405882239 (pbk.)
AV  - Graded Reader Level 4 
PY  - 2008///
CY  - Harlow, England
PB  - Pearson Education
KW  - Inventions
KW  - Graded Reader Level 4
N1  - Intermediate (1700)
ER  -