Number | Name | Date | Kind |
---|---|---|---|
3763285 | Riebel et al. | Oct 1973 | |
3775517 | Riebel et al. | Nov 1973 | |
3892823 | Maurer et al. | Jul 1975 |
Number | Date | Country |
---|---|---|
2053713 | May 1972 | DEX |
1233118 | May 1971 | GBX |
Entry |
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Nishizawa, "Agr. Biol. Chem.," vol. 25, No. 1, (1961), pp. 61-65. |