Plant patent directory.
Contributors: American Association of Nurserymen.; National Association of Plant Patent Owners.
Publisher: American Association of Nurserymen
Published: 1990
Place of publication: Washington, D.C
Language: eng
Number of pages: 617
Subjects: Plant varieties -- Patents.; Plants, Cultivated -- Protection -- United States.
Notes: Issued by the American Association of Nurserymen and the National Association of Plant Patent Owners. (Cf. pref.)

Updated by supplements.