95 books • 38 series
Discovery Kids All-Star Readers: I Am an Incredible Animal Level 2 (Animal Planet Leveled Readers)
Discovery All-Star Readers: I Am a Penguin Level 1 (Discovery Leveled Readers) (Discovery All Star Readers)
Discovery All-Star Readers: I Am a Penguin Level 1 (Library Binding) (Discovery All Star Readers) (Discovery Leveled Readers)
Discovery All-Star Readers: I Am a Dolphin Level 1 (Discovery All Star Readers) (Discovery Leveled Readers)
Discovery All Star Readers: I Am a Polar Bear Level 2 (Discovery All Star Readers) (Discovery Leveled Readers)