Christine Petersen

The Printer (Colonial People)

Earth's Changing Climate (Environment at Risk)

Protecting Earth's Food Supply (Environment at Risk)

Renewing Earth's Waters (Environment at Risk)

The Blacksmith (Colonial People)

Outrageous Ores (Rock On!: A Look at Geology) (Checkerboard Rock on)

Super Soils (Rock On!: A Look at Geology) (Checkerboard Rock on)

Controlling Earth's Pollutants (Environment at Risk)

Rock On!: A Look at Geology (Set) (Rock On!: A Look at Geology)

Flowers (21st Century Junior Library: Plants) (21st Century JR Library: Plants)

Trees (21st Century JR Library: Plants) (21st Century Junior Library: Plants)

Plants We Eat (21st Century JR Library: Plants) (21st Century Junior Library: Plants)

Plants Need Sunlight (21st Century Junior Library: Plants) (21st Century JR Library: Plants)

Does Everyone Have ADHD?

The Microscope (Inventions That Shaped the World (Hardcover))

Rosie the Riveter (Cornerstones of Freedom: Second (Library))

Vertebrates (Life and Environmental Science)

Invertebrates (Life and Environmental Science)

Solar Power (True Books) (True Books: Environment (Hardcover))

Alternative Energy

Water Power (True Books) (True Books: Environment (Hardcover))

Conservation (True Books: Environment (Hardcover))

Land Preservation (True Books: Environment (Hardcover))

The Iran-Contra Scandal (Cornerstones of Freedom: Second (Library))