TY  - BOOK
AU  - Mayer ,Cassie
TI  - Polar Region: Acorn living and nonliving 
U1  - 577.0911 23rd ed.
PY  - 2008///
CY  - U.S.A.
PB  - Heinemann library
KW  - 1. Ecology...polar regions
KW  - 2. Polar regions
ER  -