Number | Date | Country | Kind |
---|---|---|---|
50-124313 | Oct 1975 | JA |
Number | Name | Date | Kind |
---|---|---|---|
2006342 | Booge et al. | Jul 1935 | |
2316343 | Kubeka et al. | Apr 1943 | |
3337298 | Ruter et al. | Aug 1967 |
Entry |
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Mellor, A Comprehensive Theatise on Inorganic & Theoritical Chemistry, 1922, vol. 3, pp. 768-769, Longmans Green & Co., N.Y., N.Y. |