"Speltechniek (muziek)" . . . . . . . . . . . "What violinists ought to know the whys and wherefores of fundamental rules"@en . "Leermiddelen (vorm)" . . . . "What violinists ought to know : the whys and wherefores of fundamental rules" . "What violinists ought to know : the whys and wherefores of fundamental rules"@en . . "Violin Instruction and study." . . "Violen." . .