Includes information on collecting and identifying minerals, and sections on metallic, nonmetallic, gem and rock-forming minerals, and on igneous, sedimentary and metamorphic rocks.
Comprehensive guide to fossils, containing information on formation, collection, and a systematic outline of typical invertebrate, vertebrate, and plant fossil groups
A guide to identifying over one hundred forty varieties of North American conifers and broadleaved trees describes their appearance, range, and habitats.