Number | Date | Country | Kind |
---|---|---|---|
10470/74 | Mar 1974 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
3390685 | Von Bethmann et al. | Jul 1968 | |
3424171 | Rooker | Jan 1969 |
Number | Date | Country |
---|---|---|
1109583 | Jun 1961 | DEX |
Entry |
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The Chemistry and Technology of Tobacco, vol. 3, by Shmuk, published by Pishchepromizdat, Moscow, USSR, 1953, p. 120. |