Kahn, J. R. (2005). The economic approach to environmental and natural resources. Victoria, Australia: Thomson (South-Western).
Styl cytowania ChicagoKahn, James R. The Economic Approach to Environmental and Natural Resources. Victoria, Australia: Thomson (South-Western), 2005.
Styl cytowania MLAKahn, James R. The Economic Approach to Environmental and Natural Resources. Victoria, Australia: Thomson (South-Western), 2005.
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