Number | Date | Country | Kind |
---|---|---|---|
21848/73 | May 1973 | UK |
Number | Name | Date | Kind |
---|---|---|---|
3405508 | Peters et al. | Oct 1968 | |
3501897 | Van Helden et al. | Mar 1970 | |
3755535 | Naber | Aug 1973 |
Entry |
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Perry, Chemical Engineers Handbook, 4th Ed., 1963 20-67, 68, 74, 75, 95. |