Problemes i solucions de l’aigua a Caracal, Romania
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[slideshare id=1747460&doc=emeetingjunedaprezentationsapasireguliledeigiena-090721035630-phpapp01]
Els problemes ambientals de l’aigua i les seves solucions.
[slideshare id=1778956&doc=ebulgarianpresentationwater2009jannirodarien-090728023640-phpapp01]
Els problemes ambientals i el projecte de possibles solucions.
[slideshare id=1331151&doc=gcdprezentarelyonromanianationalstrategy-090423032902-phpapp01]