Home › Authors › Leroy Stone and Hubert Frenken = Leroy Stone et Hubert Frenken. 👤 Leroy Stone and Hubert Frenken = Leroy Stone et Hubert Frenken. 1 book Books by Leroy Stone and Hubert Frenken = Leroy Stone et Hubert Frenken. Canada's seniors = Les personn Canada's seniors = Les personnes âgées au Canada. 1988