AUDUBON BOOKS

FIELD GUIDE TO ROCKS & MINERALS

Chesterman, The first all-photographic field guide features 794 full-color images of all the important rocks, gems, and minerals of North America, showing their many variations of color and crystal forms. The text provides descriptions of 200 minerals (including 20 classified as gemstones), and 40 rocks, as well as descriptions of the natural environments where they occur.

#ISBN0-394-50269-8; FIELD GUIDE TO ROCKS & MINERALS; Soft Cover; (507 PAGES); $19.95

FIELD GUIDE TO FOSSIL

Thompson, this first all-photographic field guide to fossils features 474 full-color identification pictures of fossilized sponges, corals, trilobites, shells, teeth, and bones. Also included are 33 photographs of fossil bearing rocks and outcrop formations, plus 15 maps. This field giude is the first to be organized with a visual key. Photographs and maps are arranged with unique thunb-tab reference system to make identification quick and simple.

#ISBN0-394-52412-8; FIELD GUIDE TO FOSSIL; Soft Cover, (846 PAGES); $19.95