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- A walk in the desert, by Rebecca L. Johnson ; with illustrations by Phyllis V. Saroff
- Mighty animal cells, Rebecca L. Johnson ; illustrations by Jack Desrocher ; diagrams by Jennifer E. Fairman
- A walk in the rain forest, by Rebecca L. Johnson ; with illustrations by Phyllis V. Saroff
- Battle of the dinosaur bones, Othniel Charles Marsh vs. Edward Drinker Cope, Rebecca L. Johnson
- Johnson, Rebecca L, Biomes of North America
- A walk in the tundra, by Rebecca L. Johnson ; with illustrations by Phyllis V. Saroff
- A walk in the boreal forest, by Rebecca L. Johnson ; with illustrations by Phyllis V. Saroff
- Nature's ninja, Animals with spectacular skills., Rebecca L Johnson
- Chernobyl's wild kingdom, life in the dead zone, Rebecca L. Johnson
- A walk in the prairie, by Rebecca L. Johnson ; illustrations by Phyllis V. Saroff
- When lunch fights back, wickedly clever animal defenses, Rebecca L. Johnson
- A walk in the deciduous forest, Rebecca L. Johnson ; with illustrations Phyllis V. Saroff
- Zombie makers, true stories of nature's undead, Rebecca L. Johnson
- Zombie makers, true stories of nature's undead, Rebecca L. Johnson
- Battle of the dinosaur bones, Othniel Charles Marsh vs. Edward Drinker Cope, by Rebecca L. Johnson
- When lunch fights back, Wickedly clever animal defenses., Rebecca L Johnson
- A walk in the prairie, by Rebecca L. Johnson ; with illustrations by Phyllis V. Saroff
- Masters of disguise, amazing animal tricksters, Rebecca L. Johnson
- A walk in the desert, by Rebecca L. Johnson ; with illustrations by Phyllis V. Saroff
- A walk in the rain forest, by Rebecca L. Johnson ; with illustrations by Phyllis V. Saroff
- A walk in the tundra, by Rebecca L. Johnson ; with illustrations by Phyllis V. Saroff
- A walk in the boreal forest, by Rebecca L. Johnson ; with illustrations by Phyllis V. Saroff
- A walk in the deciduous forest, Rebecca L. Johnson ; with illustrations Phyllis V. Saroff
- When lunch fights back, wickedly clever animal defenses, Rebecca L. Johnson
- Chernobyl's wild kingdom, life in the dead zone, Rebecca L. Johnson
- A walk in the prairie, by Rebecca L. Johnson ; with illustrations by Phyllis V. Saroff
- Masters of disguise, amazing animal tricksters, Rebecca L. Johnson