A ten-volume set that describes the world of plants.
Content Note
v.1 Roots, Stems, & Leaves; v.2 Flowers and Fruits; v.3 Life Processes; v.4 Plant Ecology; v.5 Plants Used by People; v.6 Algae and Fungi; v.7 Mosses and Ferns; v.8 Conifers; v.9 Flowering Plants, the Monocotyledons; v.10 Flowering Plants, the Dicotyledons.