Polar bears in trouble / Rob Waring, series editor. - Boston, Mass. : Heinle/Cengage Learning, [2009] - 24 p. : col. ill., col. map ; 21 cm. - Footprint reading library Incredible animals .

Includes vocabulary list.

9781424011124


English language--Textbooks for foreign speakers.
Global warming.
Polar bears--Climatic factors.
Readers (Elementary).

599.786 WAR/O