TY  - BOOK
AU  - Pous,Dinorah
TI  - Blue planet : : english through science level 1 
SN  - 9701042271
U1  - 500  
PY  - 2003///
CY  - Boston
PB  - McGraw Hill
KW  - Living
KW  - Nonliving things
KW  - Plants
KW  - Animals
ER  -