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1.
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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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2.
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Propagation of a shock wave in a radiating spherically symmetric distribution of matter Herrera, L. - Núñez, Luis
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