picture book, rocks (2)
1991, YA (1)
chemistry, children (1)
chemistry, homeschool (1)
chemistry, non-fiction, science (1)
children's book, non-fiction, science (1)
children's, energy (1)
children's, non-fiction, science (1)
children's, reference (1)
children, energy (1)
children, geology (1)
cover, orange (1)
earth, geology (1)
earth, picture book (1)
Eyewitness, non-fiction (1)
geology, juvenile (1)
geology, non-fiction (1)
geology, picture book (1)
geology, reference (1)
grade school, picture book (1)
