TY  - DATA
ED  - Discovery Channel School
ED  - Discovery Communications Inc.
TI  - Ecology
SN  - 9830008797
PY  - 2003///
CY  - [Bethesda, Md.]
PB  - Discovery Communications Inc.
KW  - Ecology
KW  - Juvenile literature
N1  - Teacher's guide in PDF and Microsoft Word format
N2  - Discusses concept of ecology, food chain and also several xamples and activities
ER  -