Rubber Hand Stamps and the Manipulation of Rubber: A practical treatise on the manufacture of India rubber hand stamps, small articles of India rubber, the hektograph, special inks, cements, and allied subjects

· 1940

The Trees--The Sap--Caoutchouc--Early Uses by the Indians--First knowledge of it in Europe--Goodyear, Day, and Mackintosh 9 African, East Indian, Central and South American Gums--Different Methods of Collection and Coagulation 15…

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