Killing weeds with herbicides
Subtitle: student or classroom science project no. 3
By: prepared by [the] Agricultural Research Center
Contributors: United States. Agricultural Research Service
Series: PA -- 788; Program aid (United States. Department of Agriculture) -- no. 788.
Publisher: U.S. Dept. of Agriculture
Published: 1966
Place of publication: [Washington, D.C.?]
Language: eng
Subjects: Herbicides; Weeds
Notes: Caption title.

"December 1966."