*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.
Triangles in Space or Building (and Analyzing) Castles in the Air/en-ca/triangles-in-space-or-building-and-analyzing-castles-in-the-air/BA74DFE2-2D57-4DBB-BDB5-B1B2BEA028DB.htmlBA74DFE2-2D57-4DBB-BDB5-B1B2BEA028DB
Triangles In Space Or Building (and Analyzing) Castles In The Air