TY  - BOOK
AU  - Booth, Graham.
AU  - McDuell, Bob.
AU  - Sears, John.
TI  - World of science 1
SN  - 9780199146970
U1  - 500 BOO 
PY  - 1999///
CY  - Great Clarendon Street
PB  - Oxford University press
KW  - Science
KW  - Juvenile literature
KW  - Problems, exercises, etc
N1  - Include index
N2  - 	
World of Science is ideal for teaching mixed-ability classes. Each students' book is differentiated into three main levels with a molecule symbol denoting the demand each task places on the student
ER  -