The Canadian Patent Office Record and Register of Copyrights and Trade Marks Published: 1913 Total Pages: 1614 Get eBook
Scientific Canadian Mechanics' Magazine and Patent Office Record Canada. Patent Office Published: 1913 Total Pages: 2366 Get eBook
Annual Supplement to the Catalogue of the Library of Parliament in Alphabetical and Subject Order Canada. Library of Parliament Published: 1915 Total Pages: 1042 Get eBook