Beavers : dam builders /
by Andreu Llamas ; illustrated by Gabriel Casadevall and Ali Garousi.
- Milwaukee : Gareth Stevens Pub., 1996.
- p. cm.
- Secrets of the animal world .
Includes bibliographical references (p. ) and index.
Describes the physical characteristics, habitat, behavior, ancestors, and engineering abilities of these intelligent water-dwelling mammals.