"John M. Tonkin"@nl-NL . "F. John Tonkin" . "F." . "John Tonkin" . . "1946" . . . "John" . . . "F.John" . . "Tonkin, John (F. John)" . "M." . . "John" . "Tonkin, John (F.John)" . "Tonkin" . . "F.John Tonkin" . . . . "1866" . "John Tonkin"@en . . .