The Conditioned Environmental Center‐Periphery Hypothesis of Biogeography: Statistical Evidence From Tree Species by Pablo Antúnez, Martin Ricker

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Tree and tree-like species of Mexico: Euphorbiaceae, Peraceae, Phyllanthaceae, Picrodendraceae, Putranjivaceae, and Urticaceae by Victor W. Steinmann, Martin Ricker

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Especies arbóreas y arborescentes de México: gimnospermas, monocotiledóneas y helechos arborescentes by Martin Ricker, Héctor M. Hernández

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Influencia del clima en el crecimiento radial en cuatro especies de coníferas en la sierra de San Antonio Peña Nevada (Nuevo León, México) by Genaro Gutiérrez-García, Martin Ricker

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Tree and tree-like species of Mexico: Asteraceae, Leguminosae, and Rubiaceae by Martin Ricker, Héctor Manuel Hernández Macías, Mario Sousa Sánchez, Helga Ochoterena

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Tree and tree-like species of Mexico: Apocynaceae, Cactaceae, Ebenaceae, Fagaceae, and Sapotaceae by Martin Ricker, Susana Valencia-Avalos, Héctor M. Hernández, Carlos Gómez-Hinostrosa, Esteban M. Martínez-Salas, Leonardo O. Alvarado-Cárdenas, Bruno Wallnöfer, Clara H. Ramos, Pilar E. Mendoza

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