Field instructions for farmers' cooperative demonstration work. Commercial fertilizers
Subtitle: their uses and cost.
Contributors: Knapp, Seaman Ashahel, 1833-1911.; United States. Bureau of Plant Industry.
Series: Plant Industry Bur. Doc. No. 366
Publisher: [s.n.]
Published: 1908
Place of publication: Washington, D.C
Format: Microform
Subjects: Fertilizers -- United States.