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BIBLIYOGRAPIYA

A.Aklat
* kalikasan,1996 pahina 26-27
*org.kalikasan,1994 pahina 12-13
*pilipinas,1994 pahina 23-24
*likas na yaman,1995 pahina 45-46
*wikang pilipino,1997 pahina 34-35

B.Internet
* http://wwww.kalikasan.com
*http://wwww.google.com
*htttp:www.kalikasan.com
*http:www.g.kalikasan.com
*http://www.yahoo.com
*http://www.wikianswer.com
* http://www.wikipedia.kalikasan.org.com