*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.
Earth Rotation: Solved and Unsolved Problems/en-ca/earth-rotation-solved-and-unsolved-problems/422ADB9E-9839-4ECA-A5FB-2026E5208FFF.html422ADB9E-9839-4ECA-A5FB-2026E5208FFF