TY  - BOOK
AU  - Waring,Rob
TI  - Polar bears in trouble
SN  - 142401112
PY  - 2009///
CY  - Australia
PB  - Heinle, Cengage Learning
KW  - English language
KW  -  Textbooks for foreign speakers
KW  - Polar bears
KW  -  Climatic factors
KW  - Global warming
N1  - "National geographic" - cover
ER  -