The Number You Have Reached

From Author Wars - https://authorwars.com/books/the-number-you-have-reached-1441714.html

Overview:

Title: The Number You Have Reached
Author: Keith Roberts
Year: 1967
Type: Interior Art

Editions/Publications:

Unknown. SF Impulse, February 1967 (Unknown, Keith Roberts, Roberts & Vinter Ltd., 3/6, 160 pages, Paperback, MAGAZINE)