1. 01. English Non Fiction Guglielmo Marconi : the story of radio and how it made the world a smaller place / by Birch, Beverley. Publication: Toronto : Irwin Pub., 1990 . 64 p. : , On cover: Radio communications. 22 cm. Date:1990 Availability: Copies available: (1), Actions:
2. 01. English Non Fiction Alexander Graham Bell, inventor of the telephone /   Publication: Mississauga, Ont. : Copp Clark Pitman, 1991 . 28 p. : , Includes index. 21 cm. Date:1991 Availability: Copies available: (1), Actions: