THE AUTHORS 



THEODORE S. SETZER specializes in the products and 

 timber removals phase of the Forest Survey Unit 

 at Intermountain Forest and Range Experiment Sta- 

 tion. Before coming to the Intermountain Station 

 in 1965 he spent a number of years as a sawmill 

 operator and also some time in forestry research 

 and conservation planning. 



ALVIN K. WILSON designs and conducts special studies 

 for Forest Survey at the Intermountain Forest and 

 Range Experiment Station in Ogden, Utah. After 

 working in Forest Survey at the Northeastern 

 Forest Experiment Station, he spent several years 

 in forest management research for the Intermoun- 

 tain Station and returned to Forest Survey work in 

 1957. He is the author of numerous publications on 

 forest management and forest resources. 



GROVER A. CHOATE was, at the time of writing this 

 publication. Principal Resource Analyst for Forest 

 Survey at the Intermountain Forest and Range Ex- 

 periment Station, Ogden, Utah. His career in- 

 cludes work in the Lake States, Washington, D. C. , 

 the Pacific Northwest, and Southeast Asia. He 

 retired from the Forest Service in late 1969. 



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