*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.
A New System of Electric Clocks; Its Principles and "advantages"/en-ca/a-new-system-of-electric-clocks%3B-its-principles-and-advantages/DC59E944-5C56-4ED9-9135-50127C423CF2.htmlDC59E944-5C56-4ED9-9135-50127C423CF2
A New System of Electric Clocks; Its Principles and "advantages"