- Rachel Carson
- Rachel Carson and Ecology for Kids
- Rain Tonight
- Rainbow Rain
- Rainbows and Light
- Rainforest Animals for Kids: Wild Habitats Facts, Photos and Fun Children's Environment Books Editi...
- Ranger Rick's Travels
- Rangipo
- Raptor Facts For Kids 9-12
- Rastreando tortugas (Tracking Tortoises)
- Really Yucky Stuff (That's Gross Volume 2)
- Reckless
- Record Breakers!
- Recycle Riches
- Recycling
- Red Madness
- Reduce, Reuse and Recycle : The Secret to Environmental Sustainability : Environment Textbooks Chil...
- Regions and Rivers of Georgia
- Regions and Rivers of Georgia
- Remarkable Plants
- Renewable Energy Sources
- Renewable Energy Sources - Wave, Geothermal and Biomass Energy Edition : Environment Books for Kids ...
- Renewable Energy Sources - Wind, Solar and Hydro Energy Edition : Environment Books for Kids Childr...
- Reptiles
- Research Scientist
- Return from Extinction
- Rhinos in Nebraska
- Rhinos Reise
- Richard St. Barbe Baker: Child of the Trees
- Ringo the European Starling
- Ripley Twists: Extreme Earth
- Ripley Twists: Human Body
- Ripley Twists: Space
- Rivers and Lakes Inside Out
- Robots and the Whole Technology Story
- Rock Collecting for Kids
- Rocket Night
- Rocks and Minerals
- Rocks and Minerals (Fourth Grade Science Experiments)
- Rocks and Minerals : 2nd Grade Science Workbook Series
- Rocks and Minerals of The World
- Rocks and What We Know About Them - Geology for Kids Children's Earth Sciences Books
- Rocks Gems and Minerals for Kids Facts Photos and Fun Childrens Rock Mineral Books Edition
- Rocks Of The World
- Roma, la guerra dei rifiuti
- Romans
- Round about the Seashore - With Eight Coloured Pictures
- Ruby the Red Worm's Dirty Job
- Rules and Red Tape: A Prism for Public Administration Theory and Research
- Rules at School
- Rund um das Wasser - Lernen an Stationen
- Russia For Kids: People, Places and Cultures - Children Explore The World Books