Andrea Silen

National Geographic Readers: T. Rex (Level 1) - Andrea Silen

Can't Get Enough Shark Stuff: Fun Facts, Awesome Info, Cool Games, Silly Jokes, and More! - Andrea Silen

Big Book of W.O.W.: Astounding Animals, Bizarre Phenomena, Sensational Space, and More Wonders of Our World - Andrea Silen

National Geographic Readers: T. Rex (Level 1) - Andrea Silen

National Geographic Readers: Animal Superpowers (L2) - Andrea Silen

National Geographic Readers: Rainforests (Level 2) - Andrea Silen