Foy, David M.Great discoveries and inventions by African-AmericansRaleigh, N.C.; SunSum Publishers 2004SpracheenglischSchlagworteErfinder/innenSchwarzeTechnikUSAEinheitssachtitelGreat discoveries and inventions by African-AmericansNormdaten (Autor/in)VIAF: 2605160667724003560006
