TY  - BOOK
AB  - The dam built by a colony of beavers changes the environment of a valley and threatens the lives of many animal residents.
AU  - Edmonds, Walter D.
AU  - Morrill, Leslie H.,
CN  - PZ10.3.E2
CN  - CMC PZ10.3.E2
CY  - Boston :
DA  - c1971.
ET  - 1st ed.
ID  - 76740
KW  - Beavers
KW  - Conservation of natural resources
N2  - The dam built by a colony of beavers changes the environment of a valley and threatens the lives of many animal residents.
PB  - Little, Brown,
PP  - Boston :
PY  - c1971.
T1  - Beaver valley /
TI  - Beaver valley /
ER  -