Eberhardt, M., & Teal, F. (2009). A common factor approach to spatial heterogeneity in agricultural productivity analysis. University of Oxford.
Lua i Stíl Chicago (17ú heag.)Eberhardt, M., agus F. Teal. A Common Factor Approach to Spatial Heterogeneity in Agricultural Productivity Analysis. University of Oxford, 2009.
Lua MLA (9ú heag.)Eberhardt, M., agus F. Teal. A Common Factor Approach to Spatial Heterogeneity in Agricultural Productivity Analysis. University of Oxford, 2009.
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