Title: Operation grizzly bear
First published: 1989
Description: Describes the thirteen-year-study of grizzly bears done by John and Frank Craighead in Yellowstone National Park, in which their use of the radio-tracking collar and other innovations added to the scope of human knowledge about the grizzly.
Subjects: Bears, Mammals, Zoologists, Juvenile literature, Grizzly bear, Biography, Grizzly bears, Bears, juvenile literature
Places: Yellowstone National Park
People: John Johnson Craighead (1916-), Frank C. Craighead (1916-)
LC classification: QL737.C27 C35 1989