. . . . . . . "The master diver and underwater sportsman"@en . . . "The master diver and underwater sportsman" . . . . . "The Master Diver and Underwater Sportsman" . . . . . "The master diver and underwater sportsman [Rev.ed.]" . . . . . . . . "Sportduiken." . . "Plongée sous-marine." . . . . "Deep diving." . .