Environmental science :  the economy of nature and ecology of man / 
Sergio J. Lee [and 3 others] 
 - Metro Manila, Philippines :  Knowledge Educational Supply  1997 
 - 246 pages ;  26 cm. 
<br/><br/><label>ISBN: </label>9718901017 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental science
<br/><br/><label>LC Class. No.: </label>Fil GE105  / .EN61 1997 
<br/><br/><label>Dewey Class. No.: </label>F 574.5 En89