Let's Go Rock Collecting Author:Roma Gans "This is an excellent book for both boys and girls from about 5 to 10 years of age. These are the early collecting years, and rocks and minerals can be found almost anywhere. It explains, in simple terms, the basic varieties of rocks and why and how they occur. — As young collectors soon find, rocks are beauty that you can hold in your hand.... more » They don't wilt; they don't die. This book is a fine way to get kids started in building a rock collection." — Science Books and Films« less