Cevaplar

2012-12-16T12:42:16+02:00

http://www.icisleriafad.gov.tr/default_B0.aspx?id=121

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2012-12-16T12:42:22+02:00

http://www.msxlabs.org/forum/cevre-bilimleri/16906-dogal-afetler-erozyon.html 

 

burdan yapabilirsin :)

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