Margin of Profit (Original 1956 Version)

From Author Wars - https://authorwars.com/books/margin-of-profit-original-1956-version-1031563.html

Overview:

Title: Margin of Profit (Original 1956 Version)
Author: Poul Anderson
Year: 2008
Type: Short Fiction

Editions/Publications:

Unknown. The Van Rijn Method (Unknown, Poul Anderson, Baen Books, ISBN-10: 9781416555698, $6.00, pages, ebook, Collection)