The practice of lubrication an engineering treatise on the origin, nature and testing of lubicants, their selection, application and use This book, "The practice of lubrication an engineering treatise on the origin, nature and testing of lubicants, their selection, application and use", by Thomas Christian Thomsen, is a replication of a book originally published before 1920. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.