This informative guide covers the five billion years of history that have given the earth its present form, including: The earth's relation to the rest of the universeThe rocks and minerals of which
This handy identification guide to the most common kinds of rocks and minerals offers concise and fascinating information on;Physical and chemical propertiesOrigins and geologic significanceGems and
This introduction to the life of the past as revealed through fossils includes:-Descriptions of the typical plants and animals of major geological eras-Maps showing where fossils can be found-The his
