Always Inventingde Frank MurphyMateriasJuvenile literatureElectrical engineersBiographyInventorsEdison, thomas a. (thomas alva), 1847-1931, juvenile literatureEdison, thomas a. (thomas alva), 1847-1931Ediciones (1)Always Inventing (2002)Scholastic · ISBN 9780439322386Más obras de Frank MurphyBen Franklin and the magic squaresGeorge Washington and the General's DogBrave Clara Barton