Scientific Canadian Mechanics' Magazine and Patent Office Record Canada. Patent Office Published: 1920 Total Pages: 1156 Get eBook
Scientific Canadian Mechanics' Magazine and Patent Office Record Canada. Patent Office Published: 1920 Total Pages: 1350 Get eBook
The Canadian Patent Office Record and Register of Copyrights and Trade Marks Published: 1919 Total Pages: 980 Get eBook
The National Union Catalog, Pre-1956 Imprints Library of Congress Published: 1969 Total Pages: 712 Get eBook
General Catalogue of Printed Books British Museum. Department of Printed Books Published: 1965 Total Pages: 664 Get eBook