Gray, M. (2004). Geodiversity: Valuing and conserving abiotic nature. England: John Wiley & Sons, Ltd.
Citación estilo ChicagoGray, Murray. Geodiversity: Valuing and Conserving Abiotic Nature. England: John Wiley & Sons, Ltd, 2004.
Cita MLAGray, Murray. Geodiversity: Valuing and Conserving Abiotic Nature. England: John Wiley & Sons, Ltd, 2004.
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