Rafi and Rosi
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Two tree frogs, mischievous Rafi and his younger sister Rosi, learn about the plants and animals of Puerto Rico together.
Children's Book Press, an imprint of Lee & Low Books Inc
"Rafi and Rosi, two curious tree frogs, explore Puerto Rico's El Morro Fort, where they pretend to be pirates in battle, find pirate treasure, and discover a haunted sentry box"--