*Valid March 31, 2025 - May 11, 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.
Methods for Handling Imperfect Spatial Information/en-ca/methods-for-handling-imperfect-spatial-information/810DBB7C-40E6-45C1-9E1D-E942B748FBDD.html810DBB7C-40E6-45C1-9E1D-E942B748FBDD
Methods for Handling Imperfect Spatial Information