“…Illustrated history of rain in Mexico : SPI images from 1922 to 1999…”

“…Illustrated history of rain in Bolivia and South America : SPI images from 1920 to 2004…”

Tabla de Contenidos: “…Key to the Orders of Ferns and Fern-Allies -- Key to the Genera of Ferns and Fern-Allies -- Descriptions and Illustrations. Lycopodiaceae - Clubmoss Family. Selaginellaceae - Spikemoss Family. …”