*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.
Technological Progress and the Duration of Contribution Spans: December 1991 (Classic Reprint)/en-ca/technological-progress-and-the-duration-of-contribution-spans-december-1991-classic-reprint/7EA65DDB-27A4-44A2-8E30-355115AA541E.html7EA65DDB-27A4-44A2-8E30-355115AA541E
Technological Progress and the Duration of Contribution Spans