Тайнственият триъгълник

From Author Wars - https://authorwars.com/publications/tainstveniiat-triglnik-697721.html

Overview:

Title: Тайнственият триъгълник
Author: Георги Крумов
Year: 1979
Publisher: Георги Бакалов
Price: Lev 1.00
Pages: 224
Binding: Trade Paperback
Type: Anthology
Title Reference: Тайнственият триъгълник
Notes: Data from SFBG and FantLab (the entry in FantLab contains a mix of Bulgarian and Russian titles and cannot be used as a reliable source of content). Format: 32/70×100 (12 x 16.5 cm). No ISBN as issued. The publication date is considered the same as the printing date noted on the copyright page.