A Practical Invention

From Author Wars - https://authorwars.com/books/a-practical-invention-51364.html

Overview:

Title: A Practical Invention
Author: Leonard Tushnet
Year: 1972
Type: Short Fiction

Variant Titles:

1973. A Che Serve Un'invenzione Se Non Serve?

Editions/Publications:

Unknown. The Magazine of Fantasy and Science Fiction, July 1972 (Unknown, Leonard Tushnet, Mercury Press, Inc., $0.75, 148 pages, digest, MAGAZINE)