"Pack Contains: 1 x 9781409593928 100 Things to Know About Space 1 x 9781474916158 100 Things to Know About The Human Body 1 x 9781474950626 100 Things to Know About Planet Earth 1 x 9781474981835 100 Things to Know About Saving The Planet 1 x 9781474953160 100 Things to Know About The Oceans"