Fa desenes de milions d'anys, la Terra no era encara com la coneixem. Era l'època dels tiranosaures i altres criatures. Avui, l'estudi dels fòssils ...

This award-winning graded readers series is full of original fiction, adapted fiction and factbooks especially written for teenagers. Andy and Mary ar ...

Cambridge Experience Readers is an award-winning series of graded readers including original fiction, adapted fiction and non-fiction especially writt ...

Discover the pleasure of reading with this new seven-level series of original fiction, adapted fiction and factbooks specifically written for teenager ...