39 



25. Ryerson, D. E. (professor of Range Science, Department of Animal 

 and Range Sciences, Montana State University, Bozeman). 1973. 

 Telephone conversation of September 6, 



Z6. Thacker, W. 1973. Montana's dryland salinity control program. In 

 Proceedings of the Alberta Dryland Salinity Workshop, Alberta 

 Department of Agriculture, Edmonton. 



27. Trueblood, R. (wildlife biologist, Montana Fish and Game Department, 



Glasgow). 1973. Telephone conversation of April 20. 



28. U. S. D. A. 1971. Montana situation statennent. USDA State Committee 



for Rural Development. December 31. 



29. Warden, R. W. 1954. Why that north slope alkali? Montana Farmer 



Stockman. September 1, 



