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1.
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Studies on the savanna vegetation of the Venezuelan Llanos. I. The use of association analysis. Sarmiento, Guillermo - Monasterio, Maximina
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2.
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Supercooling along an altitudinal gradient in Espeletia schulzii a caulescent giant rosette species Rada R., Fermin J. - Goldstein, Guillermo - Azócar, Aura - Torres, Fresia
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