Giants from the past :  the age of mammals / 
photographs by Joseph H. Bailey. 
 - [Washington, D.C.] :  National Geographic Society,  1983. 
 - 104 p. :  col. ill. ;  28 cm. +  classroom activities folder. 
 - Books for world explorers .
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 103. 
<br/><br/> Traces the development of the first mammals, many of which grew to giant proportions in order to survive the cold temperatures and violent changes of the Ice Age. 
<br/><br/><label>ISBN: </label>0870444247 : 0870444298 (lib. bdg.) : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mammals, Fossil--Juvenile literature.<br/>Mammals, Fossil.<br/>Extinct animals.<br/>Fossils.
<br/><br/><label>Dewey Class. No.: </label>569  / G I