Desonie, Dana.  <br/><br/>Polar region:  human impacts/ Dana Desonie.  -- New York, New York:  Chelsea House,  2008. <br/>viii, 202 p.;  col. ill.;  24 cm. <br/><br/> Includes bibliographical references and index. <br/><br/><label>ISBN: </label>978-0-8160-6218-8 <br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology-Polar regions-Juvenile literature. <br/>Nature-Effect of human beings on-Juvenile literature. <br/>Polar regions_Juvenile literature.