On Charting Unreal Realms

From Author Wars - https://authorwars.com/books/on-charting-unreal-realms-1060669.html

Overview:

Title: On Charting Unreal Realms
Author: J. B. Post
Year: 1979
Type: Essays

Editions/Publications:

Unknown. An Atlas of Fantasy (Unknown, J. B. Post, Ballantine Books, ISBN-10: 0345273990, $8.95, xiv+210 pages, Trade Paperback, Non-fiction)