1. Optimal capital policy, the cost of capital, and myopic decision rules
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3. [3]Bureau of Internal Revenue,Income Tax Depreciation and Obsolescence Estimated Useful Lives and Depreciation Rates, Bulletin "F" (revised January, 1942), 1942 .
4. [5]L. R. Christensen, and D. W. Jorgenson , "U.S. Real Product and Real Factor Input, 1929-1967 ,"Review of Income and Wealth, Series 16, 1970 , forthcoming.