Announcing the 50th Anniversary Edition
of FEE's All-Time Bestseller
The Mainspring of Human Progress
BY HENRY GRADY WEAVER
New Introduction by John Hood*
FOR SIX THOUSAND YEARS PEOPLE DIED OF HUNGER.
WHY DON'T WE?
This is the basic question dealt with in MAINSPRING.
But the attempt to find the answer leads into a wide range
of subjects, such as:
• What is the greatest of all our modern inventions?
• Who invented zero (0) and why?
• Just what is the difference between...
comments:50th Anniversary Edition
303-The Mainspring of Human Progress Announcement.pdf