Morskiyat i okeanskiyat ribolov na B'lgariya

antarctic ocean atlantic ocean black sea encuestas environmental management fishery biology fishery resources fishing grounds fondos de pesca hidrobiologia hydrobiologie hydrobiology indian ocean mar negro marine fisheries mer noire oceano antartico oceano atlantico oceano pacifico pacific ocean peces marinos pesca marina poisson de mer recursos pesqueros ressource halieutique saltwater fishes surveys