A sampling fork for estimating populations of small arthropods
By: Charles F. Henderson
Contributors: United States. Entomology Research Branch
Series: ARS -- 33-18; ARS (Series) (United States. Agricultural Research Service) -- 33-18.
Publisher: U.S. Dept. of Agriculture, Agricultural Research Service
Published: 1956
Place of publication: [Beltsville, Md.?]
Language: eng
Subjects: Agricultural pests; Monitoring; Equipment
Notes: Caption title.

"March 1956."