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| | The Performance of Neoclassical-Econometric Models of Natural Resource Substitution in the Presence of Environmental Constraints | | Raymond J. Kopp, Michael Hazilla and V. Kerry Smith | | Economic Theory of Natural Resources | W. Eichhorn, R. Henn, K. Neumann and R.W. Shephard, eds. | Heidelberg, Germany: Physica-Verlag | 1982 | |
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