*Valid May 12, 2025 - June 29, 2025 at Canadian stores and at indigo.ca, while quantities last, with $30.00 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.
Introduction to Systems Theory/en-ca/introduction-to-systems-theory/5B33B5DB-EE0A-44A9-9881-11321366A72F.html5B33B5DB-EE0A-44A9-9881-11321366A72F