Paul P. Sipiera

Globes (A New True Book)

I Can Be An Astronomer

Project Apollo (True Books-Space)

The Solar System

Earthquakes (True Books: Nature)

Project Gemini (True Books)

Meteorites (A New True Book)

Roald Amundsen And Robert Scott: Race For The South Pole (World's Great Explorers)

Gerald Ford: Thirty-Eighth President Of The United States (Encyclopedia Of Presidents)

Constellations (True Books)

Floods

True Books: Seasons: Earth Science

Hubble Space Telescope

Meteorites (New True Books)

I Can Be An Oceanographer (I Can Be Books)

I Can Be A Biologist (I Can Be Books)

I Can Be A Physicist (I Can Be Books)