Number | Date | Country | Kind |
---|---|---|---|
51-156280 | Dec 1975 | JA |
Number | Name | Date | Kind |
---|---|---|---|
477089 | Strombeck | Jun 1892 | |
1654863 | Cooper et al. | Jan 1928 | |
3349569 | Nebgen | Oct 1967 |
Entry |
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Audrieth "Inorganic Synthesis," McGraw-Hill Book Company, 1950, pp. 48-50. |