Ptolemy's Red Sirius

From Author Wars - https://authorwars.com/books/ptolemys-red-sirius-115801.html

Overview:

Title: Ptolemy's Red Sirius
Author: Robert S. Richardson
Year: 1971
Type: Essays

Editions/Publications:

Unknown. Analog Science Fiction/Science Fact, February 1971 (Unknown, Robert S. Richardson, Condé Nast, $0.60, 180 pages, digest, MAGAZINE)