TY  - BOOK
AU  - Stirling,Ian
TI  - Polar bears: the natural history of a threatened species 
SN  - 1554551552 : PAP
AV  - QL737.C27 S726 2011
U1  - 599.786 23
PY  - 2011///
CY  - Markham, Ont., Brighton, Mass.
PB  - Fitzhenry & Whiteside
KW  - Polar bear
N1  - Includes bibliographical references (p. 323-330) and index
N2  - Describes how polar bears evolved, how they are researched, their characteristics and behavior, and how the threat of global warming is jeopardizing their survival
ER  -