Freedman, Bill. <br/><br/>
Environmental Science :  A canadian perspective/ 
Bill Freedman. 
 - San Diego :  Academic Press,  c1998. 
 - xiii, 606 p. :  ill., maps ;  24 cm. 
<br/><br/>Includes bibliographical references (p. 469-541) and indexes. 
<br/><br/><label>ISBN: </label>9780135242407 0122665422 (paper : acidfree paper) 
<br/><br/><label>LCCN: </label>94007665  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution.<br/>Nature--Effect of human beings on.<br/>Ecological disturbances.
<br/><br/><label>LC Class. No.: </label>QH545  / .F73 1998 
<br/><br/><label>Dewey Class. No.: </label>574.5/222