【實用書籍app】Alexander Graham Bell's Biography|最夯免費app-綠色工廠好玩App

This is a great informative book application for Alexander Graham Bell. He was an eminent scientist, inventor and innovator who is credited with inventing the first practical telephone. Alexander Graham Bell became one of the members of the National Geographic Society.We are carried out very useful information about him, his inventions as well as his biography this will be very useful to gain knowledge about a great founder of telephone.This application will be a great help for you guys to gain your knowledge…