*Valid September 30, 2024 - December 25, 2024 at Canadian stores and at indigo.ca, while quantities last, with $50.00 or more pre-tax purchase of eligible product(s), after discounts and plum points redemptions. Minimum purchase amount excludes gift cards, plum+ memberships, Love of Reading products/donations, and shipping costs. Selection may vary between stores and online.
A Helical Wave Guide (Classic Reprint)/en-ca/a-helical-wave-guide-classic-reprint/391D3133-3BEC-4D6D-BBAE-FA9A8AA83EF5.html391D3133-3BEC-4D6D-BBAE-FA9A8AA83EF5