TY  - BOOK
AU  - Waring,Rob
ED  - National Geographic Society (U.S.)
TI  - Alternative energy
T2  - Footprint reading library. Advanced C1
SN  - 9781424012367 (pbk.)
AV  - Graded Reader 
PY  - 2010///
CY  - Andover, UK
PB  - Heinle/Cengage Learning
KW  - Renewable energy sources
KW  - Readers.
N1  - "National Geographic"--P. [1] of cover
ER  -