The broken lines depict unclaimed environmental subject matter.
The broken lines depict unclaimed environmental subject matter.
Number | Date | Country | Kind |
---|---|---|---|
000284450 | Jan 2005 | EM | regional |
Number | Name | Date | Kind |
---|---|---|---|
D253400 | Vander Wilt | Nov 1979 | S |
D253525 | Wilson | Nov 1979 | S |
D275187 | Skarman | Aug 1984 | S |
D279769 | Thornton et al. | Jul 1985 | S |
D283407 | Fenne | Apr 1986 | S |
D314719 | Gardner | Feb 1991 | S |
D368041 | Skog | Mar 1996 | S |