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CONTENTS 1

1．Principal Views of an Object 1

2．Friction and Lubrication 5

3．Bearings 9

4．Shafts 13

5．Transmission of Power by Gears and Couplings 17

6．Belts 21

7．Hydraulic Systems 25

8．Preface to“Electricity and Electronics for Agri-culture” 31

9．Current Developments of the Microcomputer 35

10．Requirements for an Agricultural Engineer 39