The Canadian Patent Office Record And Mechanics' Magazine, Volumes 1-2/fr-ca/the-canadian-patent-office-record-and-mechanics-magazine-volumes-1-2/A0C45B56-E88D-453B-8717-3E88E616341C.htmlA0C45B56-E88D-453B-8717-3E88E616341C
The Canadian Patent Office Record And Mechanics' Magazine, Volumes 1-2