Care and culture of earthworms
By: prepared by Andrew S. Landforce.
Contributors: Oregon State University. Cooperative Extension Service.
Series: FS -- 140.; Fact sheet (Oregon State University. Cooperative Extension Service) -- 140.
Publisher: Oregon State University, Cooperative Extension Service
Published: 1968
Place of publication: [Corvallis, OR]
Language: eng
Subjects: Earthworm culture.
Notes: Caption title.

"March 1968."