LITERATURE CITED 



(1) American Society of Photogrammetry . 



1960. Manual of photographic interpretation 7: 484-489, illus. 



(2) Bickford, C. A. 



1961. Stratification in timber cruising. Jour. Forestry 59: 761-763 . 



(3) , R. A. Chapman, and A. P. Caporaso. 



1952. Report on cooperative test of "Continuous inventory" forest survey system 

 in eastern Maryland. U.S. Forest Serv. , Northeastern Forest Expt. Sta . , 31 

 pp. Upper Darby, Pa. 



(4) Kendall, R. H., and L. Sayn - Wittgenstein . 



1961. A test of effectiveness of air-photo stratification. Forestry Chron: 37: 

 350-355. 



(5) Macpherson, A. F. 



1962. Testing the efficiency of air-photo stratification used in the New Brunswick 

 Forest Inventory. Forestry Chron. 38: 450-458. 



(6) Moessner, Karl E . 



1957. Preliminary aerial volume tables for conifer stands in the Rocky Mountains. 

 U.S. Forest Serv. Intermountain Forest and Range Expt. Sta. Res. Paper 41, 

 17 pp., illus. Ogden, Utah. 



(7) 



1959. Estimating timber volume by direct photogrammetric methods . Soc. Amer. 

 Foresters Proc . , pp. 148-151. 



(8) U.S. Department of Agriculture , Forest Service. 



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

 mountain Forest and Range Expt. Sta., Misc. Pub. 25, 13 pp., illus. Ogden, 

 Utah. 



In 



