Nelson, Darby. <br/><br/>
Student study guide to accompany Environmental science :  a global concern, 5th ed. / 

 - Boston, [etc.] :  WCB/McGraw-Hill,  1999. 
 - 275 p. :  ill. ;  28 cm. 
<br/><br/><label>ISBN: </label>0697412512 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences
<br/><br/><label>Dewey Class. No.: </label>363 WCB 1999 A077 Or.