Number | Date | Country | Kind |
---|---|---|---|
3930378 | Sep 1989 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
4516008 | Jones | May 1985 | |
4634830 | Furudate | Jan 1987 | |
4795877 | Bridgstock et al. | Jan 1989 | |
4954686 | Izume | Sep 1990 |
Entry |
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Abstracts--vol. 6 #1 Jan. 7, 1989 56-126084. |
Abstracts--vol. 13 #300 Jul. 11, 1989 1-91978. |