Parallel Universes: Fantasy or Science Fiction?

From Author Wars - https://authorwars.com/books/parallel-universes-fantasy-or-science-fiction-1856128.html

Overview:

Title: Parallel Universes: Fantasy or Science Fiction?
Author: Joseph D. Miller
Year: 1987
Type: Essays

Editions/Publications:

Unknown. Intersections: Fantasy and Science Fiction (Unknown, Joseph D. Miller, Southern Illinois University Press, ISBN-10: 080931374X, $29.95, x+252 pages, Hardcover, Non-fiction)