Studies of Airplane Spray-deposit Patterns at Low Flight Levels

Investigations in Erosion Control and Reclamation of Eroded Land at the Red Plains Conservation Experiment Station, Guthrie, Okla. 1930-40: Issues 826-850

Soil Erosion and Stream Flow on Range and Forest Lands of the Upper Rio Grande Watershed in Relation to Land Resources and Human Welfare: Issues 551-575