Number | Date | Country | Kind |
---|---|---|---|
81 15065 | Jul 1981 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
2199696 | Fleck | May 1940 | |
2951741 | Sill | Sep 1960 | |
4272440 | Sefton et al. | Jun 1981 | |
4366128 | Weir et al. | Dec 1982 |
Number | Date | Country |
---|---|---|
2404601 | Mar 1979 | FRX |
2462482 | Mar 1981 | FRX |
Entry |
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Bailer, J. C., et al., Editors, Comprehensive Inorganic Chemistry vol. 2, Pergamon Press, Ltd. Oxford, U.K. 1973, pp. 652-653. |