208 books • 44 series
Cougars (Eye to Eye with Big Cats)
American Currency (Money Power (Rourke))
Arbor Day (Rourke's Holiday Celebrations)
Earth Day (Rourke Discovery Library (Library))
Southern Elephant Seal (Giants Among Us)
Insects Discovery Library Set
Black Widows (Spiders Discovery Library)
Hormigas (Insects Discovery Library)
Mariquitas (Ladybugs) (Biblioteca del Descubrimiento de los Insectos (Insects Disco)
Mariposas (Biblioteca del Descubrimiento de Insectos/Insects Discovery)
Mantis Religiosas (Biblioteca del Descubrimiento de Insectos/Insects Discovery)
Mariquitas (Biblioteca del Descubrimiento de Insectos/Insects Discovery)
Insectos Set
Libelulas (Dragonfiles) (Biblioteca del Descubrimiento de Insectos/Insects Discovery) (Insects Discovery Library)
Mantis Religiosas (Praying Mantises) (Biblioteca del Descubrimiento de los Insectos (Insects Disco) (Insects Discovery Library)
Jumping Spiders (Spiders Discovery Library)
Dragonflies (Insects Discovery Library)
Ants (Insects Discovery Library)
Libelulas (Dragonflies) (Biblioteca del Descubrimiento de los Insectos (Insects Disco)
Tarantulas (Spiders Discovery Library)
Wolf Spiders (Spiders Discovery Library)
Fishing Spiders (Spiders Discovery Library)
Garden Spiders (Spiders Discovery Library)
Katydids (Insects Discovery Library)