Certification of tree seed
By: [prepared by David R. DeYoe].
Contributors: Oregon State University. Extension Service.
Series: Woodland workbook; Extension circular / Oregon State University Extension Service -- 1101.; Extension circular (Oregon State University. Extension Service) -- 1101.
Publisher: Oregon State University Extension Service
Published: 1983
Place of publication: Corvallis, Or
Language: eng
Subjects: Trees -- Seeds -- Certification -- Oregon.; Trees -- Seeds -- Certification -- Washington (State)
Notes: Title from caption.

"June 1983."