Heicon '70 International
From Author Wars - https://authorwars.com/books/heicon-70-international-1888373.html
Overview:
- Title: Heicon '70 International
- Author: Mario B. Bosnyak
- Year: 1970
- Type: Non-fiction
- Series: Worldcon Program Books
- Number in Series: 28
Editions/Publications:
- 1970 . Heicon '70 International (1970, Mario B. Bosnyak, Heicon '70 Committee, DM 5, 74 pages, Pamphlet, Non-fiction)