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Graff, P. and Aguiar, M. R. 2011. Testing the role of biotic stress in the stress gradient hypothesis. Processes and patterns in arid rangelands. – Oikos 000: 000–000.
Graff, P. and Aguiar, M. R. 2011. Testing the role of biotic stress in the stress gradient hypothesis. Processes and patterns in arid rangelands. – Oikos 000: 000–000.