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Velazquez, A., C. Medina Garcia, E. Duran Medina, E. Amador and L. F. Gopar Merino: Standardized Hierarchical Vegetation Classification. Mexcican and Global Patterns. 2016. (Geobotany Studies). 6 (4 col.) figs. XXIII, 143 p. gr8vo. Hardcover. (106808) 117.70
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