Series 654:
A great collection of 14 books about 'How It Works'.
This is an informative series giving the science behind much of our modern technology. None of the books were produced with dust wrappers.
HOW IT WORKS: THE MOTOR CAR
HOW IT WORKS: THE ROCKET
HOW IT WORKS: THE AEROPLANE
HOW IT WORKS: TELEVISION
HOW IT WORKS: THE LOCOMOTIVE
HOW IT WORKS: THE MOTOR CYCLE
HOW IT WORKS: THE HOVERCRAFT
HOW IT WORKS: THE CAMERA
HOW IT WORKS: FARM MACHINERY
HOW IT WORKS: THE OCEAN LINER
HOW IT WORKS: THE COMPUTER
HOW IT WORKS: THE TELESCOPE AND MICROSCOPE
HOW IT WORKS: PRINTING PROCESSES
HOW IT WORKS: THE TELEPHONE