Inspecting and cleaning subsurface drain systems
By: [by L. B. Grass, A. J. MacKenzie, and L. S. Willardson]
Contributors: MacKenzie, A. J., joint author; Willardson, L. S., joint author; United States. Agricultural Research Service. Western Region
Edition: [Slightly rev. Sept. 1976]
Series: Farmers' bulletin ; no. 2258; Farmers' bulletin (United States. Dept. of Agriculture) -- no. 2258.
Publisher: U.S. Dept. of Agriculture, Agricultural Research Service, [Western Region] : for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1975
Place of publication: [Washington]
Language: eng
Number of pages: 16
Subjects: Drainage -- United States
Notes: Issued July 1975