United Nations Environment Programme, & Environment and Economics Unit. (1994). Consultative expert group meeting on valuation of environmental and natural resources. Nairobi: UNEP.
Citación estilo ChicagoUnited Nations Environment Programme, y Environment and Economics Unit. Consultative Expert Group Meeting On Valuation of Environmental and Natural Resources. Nairobi: UNEP, 1994.
Cita MLAUnited Nations Environment Programme, y Environment and Economics Unit. Consultative Expert Group Meeting On Valuation of Environmental and Natural Resources. Nairobi: UNEP, 1994.
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