1
|
|
--subdivision Heirloom varieties under individual plants and groups of plants, e.g. Corn--Heirloom varieties
|
|
1
|
3
|
|
Plant varieties -- Patents -- Government policy. / https://id.loc.gov/authorities/subjects/sh85102889 https://id.loc.gov/authorities/subjects/sh99005269 : Haugen, Hans Morten,
|
2007
|
1
|
5
|
|
Plant varieties -- Research. / https://id.loc.gov/authorities/subjects/sh85102888 https://id.loc.gov/authorities/subjects/sh2002006576
|
2013
|
1
|
6
|
|
Plant varieties -- United States. / https://id.loc.gov/authorities/subjects/sh85102888 https://id.loc.gov/authorities/names/n78095330-781
|
1995
|
1
|