*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.
The Principle of the Commutation-Act, Established by Facts (Classic Reprint)/en-ca/the-principle-of-the-commutation-act-established-by-facts-classic-reprint/C4050E7C-38C2-4C49-8280-670D5937F0DF.htmlC4050E7C-38C2-4C49-8280-670D5937F0DF
The Principle of the Commutation-Act, Established by Facts (Classic Reprint)