LITERATURE CITED 



Cochran, William G. 



1963. Sampling techniques. 2d ed. New York: John Wiley 5 Sons, 413 p. 



Daubenmire, R. , and Jean B. Daubenmire 



1968. Forest vegetation of eastern Washington and northern Idaho. Wash. 

 Agr. Exp. Sta. Tech. Bull. 60, 104 p., illus. 



Stage, Albert R, 



1971. Sampling with probability proportional to size from a sorted list. USDA 

 Forest Serv. Res. Pap. lNT-88, 16 p. 



Stage, Albert R, , Richard C. Dodge, and James E. Brickell 



1968. NETVSL--a computer program for calculation of tree volumes with interior 

 defect. USDA Forest Serv. Res. Pap. INT-Sl, 30 p. 



USDA Forest Service 



1962. Developing the data framework for effective timber management. Inter- 

 mountain Forest and Range Exp. Sta. Misc. Pub. 25, 13 p. 



Williams, R. M. 



1956. The variance of the mean of systematic samples. Biometrika 43(1/2): 

 137-148, illus. 



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