Number | Date | Country | Kind |
---|---|---|---|
9638/78 | Sep 1978 | CHX |
Number | Name | Date | Kind |
---|---|---|---|
4160042 | Farr et al. | Jul 1979 |
Number | Date | Country |
---|---|---|
865052 | Mar 1971 | CAX |
Entry |
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Muzzarelli, Natural Chelating Polymers, 1973, Pergamon Press: New York, pp. 145, 150, 151, 168. |
Sivetz, Coffee-Origin and Lese, 1973, Coffee Publications: Corwallis, 0R. Chapter 8, p. 27. |