- HörbuchJourney into the DeepRebecca L. Johnson
- HörbuchZombie MakersRebecca L. Johnson
- HörbuchA Walk in the Tundra, 2nd EditionRebecca L. Johnson
- HörbuchA Walk in the Boreal Forest, 2nd EditionRebecca L. Johnson
- HörbuchA Walk in the Deciduous Forest, 2nd EditionRebecca L. Johnson
- HörbuchNature's NinjaRebecca L. Johnson
- HörbuchYour Muscular SystemRebecca L. Johnson
- HörbuchYour Digestive SystemRebecca L. Johnson
- HörbuchA Walk in the Prairie, 2nd EditionRebecca L. Johnson
- HörbuchWhen Lunch Fights BackRebecca L. Johnson
- HörbuchA Walk in the Desert, 2nd EditionRebecca L. Johnson
- HörbuchMasters of DisguiseRebecca L. Johnson
- HörbuchA Walk in the Rain Forest, 2nd EditionRebecca L. Johnson