Applicator for precision placement of chemicals in soil
By: [by Richard F. Dudley and R. L. Ridgway
Contributors: Ridgway, R. L.
Series: [U.S. Agricultural Research Service] ARS 42-123; ARS 42 -- 123.
Publisher: Agricultural Research Service, U.S. Dept. of Agriculture
Place of publication: Washington]
Language: eng
Subjects: Fertilizer equipment
Notes: "Literature cited": p. 7-[8]