Where does our city's wasterwater flow? How are all the tall buildings in our city supported? What happens if you climb down a manhole? Going Underground explores...
Benjay, the Pharaoh's son, wants to know what the most precious thing in Egypt is. Finding a satisfactory answer to this question is not as easy as he had hoped...
Released in 1990 after 10.000 days in prison, Nelson Mandela was a key figure in ending apartheid in South Africa. He went on to become the country's first black...
Georgina and George are twins with a secret. Their parents think that George fights dragons while Georgina stays at home and sews. But that's not quite true.
Elaborado pela instituição brasileira responsável pelas normas de ortografia da Língua Portuguesa. Apresenta mais de 30 mil verbetes, divisão silábica, registro...
Viewpoint is a two-level series in American English for adults and young adults, taking learners from a high intermediate to advanced level of proficiency (CEFR...
El Manual Nuevo Ven está realizado conforme a los principios de una enseñanza comunicativa, dinámica y participativa. Recoge las recomendaciones y sugerencias...
