Title: Earth heroes
Description: "The youth, career, and lasting contributions of some of the world's greatest naturalists and environmentalists are featured in this series of books on champions of the wilderness, ocean, and wild animals, with this volume focusing on those who saved wild animal species from extinction"--Provided by the publisher.
Subjects: Wildlife conservationists, Naturalists, Juvenile literature, Biography, Endangered species, Wildlife conservation, Wildlife conservation, juvenile literature, Endangered species, juvenile literature