REFERENCES 
Avery, T. 
1966: 
Avery, T. 
1967: 
Brunk, H. 
1965: 
Ffolliott, 
1973: 
Larson, F. 
1971: 
Moessner, 
1964: 
Forester's guide to aerial photo interpretation. USDA Forest 
Service, Agricultural Handbook No. 308, 40 p. 
Forest measurements. McGraw-Hill Book Co., New York. 290 p. 
An introduction to mathematical statistics. Blaisdell 
Publishing Co., Waltham, Mass. 429 p. 
P. F., and D. P. Worley. 
Forest stocking equations: their development and applications. 
USDA Forest Service, Research Paper RM-102, 8 p. 
R., K. E. Moessner, and P. F. Ffolliott. 
A comparison of photo and ground measurements of ponderosa 
pine stands. USDA Forest Service, Research Note RM-192, 
4 p. 
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Two aerial photo basal area tables. USDA Forest Service, 
Research Note INT-23, 7 p.