Front matter
Reading edition
Transcriber's Note:
This etext was produced from Analog Science Fact & Fiction December 1963. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.
THIN EDGE
There are inventions of great value that one type of society can use—and that would, for another society, be most nastily deadly!
BY JOHNATHAN BLAKE MAC KENZIE
ILLUSTRATED BY JOHN SCHOENHERR