Libros de Jennifer Kroll :

Algunas de las cosas más poderosas de la Tierra son tan pequeñas que no pueden verse a simple vista. Echa

Readers will love this exciting biography about the famous cowgirl, Annie Oakley! Through colorful images, helpful text, an accessible glossary

Some of the most powerful things in the world are so tiny they cant be seen with the naked eye!

In this Spanish-translated nonfiction book, learn about various technological innovations that have occurred throughout history.