Boyer, Crispin, The book of heroes : tales of history's most daring dudes Crispin Boyer. - Washington, D.C. National Geographic 2016 - 175 p. color ill. 29 cm - National Geographic kids . Includes index. Ages 8-12. ISBN: 9781426325533 (hardcover : alk. paper) 9781426325540 (library binding : alk. paper) LCCN: 2016027133 Subjects--Topical Terms: Heroes--Biography--Juvenile literature. LC Class. No.: CT107 / .B63 2016 Dewey Class. No.: 920.02