Number | Date | Country | Kind |
---|---|---|---|
5930/76 | May 1976 | CH |
Number | Name | Date | Kind |
---|---|---|---|
2820042 | Katz et al. | Jan 1958 | |
3984426 | Winkelmann et al. | Oct 1976 |
Entry |
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R. Morrison & R. Boyd, "Organic Chemistry", Allyn and Bacon, Inc., Boston, 1974-(3rd Edition) p. 457. |