How teachers in rural elementary schools may use Farmers' Bulletin 868, How to increase potato crops by spraying
By: [F. E. Heald]
Contributors: United States. Department of Agriculture. States Relations Service
Published: 1918
Language: eng
Subjects: Potatoes; Study and teaching; Agriculture; Pesticides
Notes: Caption title

At head of title: "U. S. Department of Agriculture, States Relations Service. A. C. True, Director"--page 1

"December 10, 1917"--page 2