How to take a soil sample and why
By: [originally prepared by E. Hugh Gardner, slightly revised by John Hart].
Contributors: Gardner, Ernest Hugh.; Oregon State University. Extension Service.
Edition: Rev. May 1995.
Series: EC -- 628, rev. May 1995.; Extension circular (Oregon State University. Extension Service) -- 628.
Publisher: Oregon State University Extension Service
Published: 1995
Place of publication: [Corvallis, Or.]
Language: eng
Subjects: Soils -- Testing.; Soils -- Oregon -- Testing.
Notes: Title from front panel.