Gardner D. Hiscox and Prof. T. O'Conor Sloane books & textbook
Henleys Twentieth Century Formulas, Processes And Trade Secrets
Gardner D. Hiscox and Prof. T. O'Conor Sloane
The Norman W Henley Publishing Co /1935T Hardcover
Henley's Twentieth Century Book of Formulas, Processes and Trade Secrets
Prof. T. O'Conor Sloane Gardner D. Hiscox, M.E.
Norman W. Henley Publishing /1952T Hardcover / 867 Pages
