(Plant Industry. Soils, and Agricultural Engineering Bureau and Human Nutrition and Home Economics Bureau.) [Prepared in cooperation with extension services and agricultural engineering departments of State agricultural colleges.]
Notes:
(Plant Industry. Soils, and Agricultural Engineering Bureau and Human Nutrition and Home Economics Bureau.) [Prepared in cooperation with extension services and agricultural engineering departments of State agricultural colleges.] * For Sale by Superintendent of Documents. Paper, 5c.
Availability:
* For Sale by Superintendent of Documents. Paper, 5c.