95 books • 60 series
Why the sea is salty (2.4 First Reading Level Four (Green)) (Usborne First Reading, Level 4)
Stories of Unicorns (Young Reading Series 1 Gift Books) (3.1 Young Reading Series One (Red))
The Story of Rome (Usborne Young Reading: Series Two) (3.2 Young Reading Series Two (Blue))
Stories of Ponies (Young Reading Series 1) (3.1 Young Reading Series One (Red)) (Usborne Young Reading: Series One)
Bugs (Usborne Internet-Linked Discovery Program ) (Internet-linked "Discovery" Programme S.) (Usborne Discovery (Usborne Hardcover)) (Usborne Internet-Linked Discovery Program (Paperback))