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Daniel P, Gross ; Daniel, Gross. (2017) Scale versus Scope in the Diffusion of New Technology: Evidence from the Farm Tractor.
In: NBER Working Papers. RePEc:nbr:nberwo:24125.
Full description at Econpapers
cites:
Tractors and implements (in millions) 0 10 20 30 Horses and mules (in millions) 1910 1920 1930 1940 1950 1960 Horses/mules All tractors All implements Notes: All implements refers to the sum of grain combines, corn harvesters, and pick-up hay balers owned by U.S. farms; this total does not include other implements not provided in the Historical Statistics or recorded in historical Censuses. Correlation of tractors and implements on U.S. farms is 0.996 over the 19 years for which data on all three implements are available. Data from Historical Statistics of the U.S., Series Da623, Da629-631, Da983, Da985, Da987.
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