Number | Date | Country | Kind |
---|---|---|---|
2934659 | Aug 1979 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2875138 | Altreuter et al. | Feb 1959 | |
3064008 | Phillips et al. | Nov 1962 | |
3517033 | Weiberg | Jun 1970 | |
3881996 | Schmidt | May 1975 |
Entry |
---|
Starcher et al., J. A. C. S. 1958, pp. 4079-4081. |