http://en.wikipedia.org/wiki/Water_politics_in_the_Nile_Basin#Pollution_of_the_Nile_River
http://sitemaker.umich.edu/sec004_gp5/pollution
Human Impacts on the Nile River
http://www.al-monitor.com/pulse/originals/2014/03/egypt-nile-pollution-drinking-water-shortage.html#
..
http://sitemaker.umich.edu/sec004_gp5/pollution
Human Impacts on the Nile River
http://www.al-monitor.com/pulse/originals/2014/03/egypt-nile-pollution-drinking-water-shortage.html#
..
pirms 11 gadiem
500
Matiss , pirms 11 gadiem :
Lohs