Triangle

From Author Wars - https://authorwars.com/publications/triangle-373379.html

Overview:

Title: Triangle
Author: Isaac Asimov
Year: 1961
Publisher: Doubleday
Price: C$4.50
Pages: 516
Binding: Hardcover
Type: Omnibus
Title Reference: The Currents of Space
Notes:
Price from Tuck
Unknown if the Canadian edition has the same gutter code as the US edition