Showing all 2 books
The vegetable gums and resins constitute an important group of economic plant products and are utilized in many ways. Their uses by man, in fact, go back to the earliest times. In modern industry large quantities of both resins and gums have been used for many years in manufacturing processes of various kinds. Their uses continue to increase. The terms "gum" and "resin" are often used in a somewhat indefinite or vague manner. They have been ...