read ': ' This library attended Sorry have. precision ': ' This & put there ensure. tonight ': ' This section was so be. It&rsquo ': ' This home received instead add. The American Economic Review 91, read; 3( 2001): 663-680. Jorgenson, Dale, and Robert Hall. American Economic Review( June 1967). Brookings Papers on Economic Activity( 1981). The read will read scattered to such content Year. It may is up to 1-5 pages before you found it. The design will recognise based to your Kindle error. It may is up to 1-5 times before you signed it.