Before revision: Marshall–Arrow–Romer spillover A business park in Santa Barbara County, California that may generate MAR spillover Marshall–Arrow–Romer (MAR) spillover has its origins in 1890, where the English economist Alfred Marshall developed a theory of knowledge spillovers.
After revision: Marshall–Arrow–Romer Conceptualizations A business park in Santa Barbara County, California that may generate MAR spillover Marshall–Arrow–Romer (MAR) spillover has its origins in 1890, where the English economist Alfred Marshall developed a theory of knowledge spillovers.