International Union of Leather Chenists' Societies: Physical Testing Commission: Experiments on Draft Method I.U.P./19. Assessment of the resistance of air dry upper leathers to heat, with special reference to the direct moulded and the injection moulded process of footwear construction

International Union of Leather Chemists' Societies Physical Testing Commission: I.U.P. / 19 upper leather (Second experiment Ridgecheck)