Ecology Black Sea
Ecology Black Sea
http://library.thinkquest.org/c0112209/html/history.html
Diving Travel
Scuba diving tours and packages in bulgaria
http://www.divingtravel.com/bulgaria.htm
Divebul
Divebul
http://www.divebul.com/
Kozak Travel
Kozak Travel
http://www.kozaktravel.com/toers_diving.htm
Ntvmsnbc.com
Ntvmsnbc.com
http://www.ntvmsnbc.com/news/320147.asp
The Black Sea GOOS
Black sea global ocean observing system, history of black sea goos
http://www.ims.metu.edu.tr/black_sea_goos/history.htm
Ocean.edu
Ocean.edu
http://www.ocean.udel.edu/blacksea/history/index.html
Voor Kinderen
Voor Kinderen
http://www.historyforkids.org/learn/westasia/environment/blacksea.htm