TY  - BOOK
AU  - Patent,Dorothy Hinshaw
AU  - Hartman,Cassie
AU  - Hartman,Dan
TI  - When the wolves returned: restoring nature's balance in Yellowstone 
SN  - 0329728733
AV  - QL737.C22 P385 2008
U1  - 599.773/177/09787/52 22
PY  - 2008///
CY  - New York
PB  - Walker
KW  - Wolves
KW  - Reintroduction
KW  - Yellowstone National Park
KW  - Juvenile literature
KW  - Pictorial works
KW  - Wildlife reintroduction
KW  - Wildlife conservation
KW  - sears
N1  - Includes bibliographical references and index; Booklist; Horn Book; Library Media Connection starred; 6.0; Follett Library Resources; 3-6; Follett Library Resources
N2  - Discusses how the wolf, once returned to Yellowstone National Park, helped restore balance to the ecosystem by minimizing the predation of coyotes on smaller creatures, keeping the elk herd on the run, thereby helping more aspen and willow trees to grow, and influencing other previously misunderstood dynamics
ER  -