A review of the patents and literature on the manufacture of potassium nitrate with notes on its occurrence and uses /

"July 1934."

Economic survey of the live-poultry industry in New York City /

"Issued August 1937."

Effect of physical soil properties on cotton emergence : prediction and quantitative description / [by D. F. Wanjura].

"Agricultural Research Service ... in cooperation with Arizona and Texas Agricultural Experiment Stations."

Watershed management for summer flood control in Utah /

Contribution from Forest Service.