Cobalt

Referenceshttp://geoo.ucoz.kz/publ/18-1-0-107

http://www.cmmarket.ru/markets/coworld.htm

http://libmetal.ru/co/cobalt%201.htm

http://www.infomine.ru/files/catalog/35/file_35_eng.pdf

http://forexaw.com/TERMs/Raw_materials/Other_extractive_materials/l989_%D0%A6%D0%B2%D0%B5%D1%82%D0%BD%D1%8B%D0%B5_%D0%BC%D0%B5%D1%82%D0%B0%D0%BB%D0%BB%D1%8B_Non-ferrous_metal_%D1%8D%D1%82%D0%BE