*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.
General Systems Theory: A Mathematical Approach/en-ca/general-systems-theory-a-mathematical-approach/CE147AF9-A073-4F14-BE0C-71C3200EC0C1.htmlCE147AF9-A073-4F14-BE0C-71C3200EC0C1