por Freiberger, Marianne [autor] | Thomas, Rachel [autor] | Ribas, Montserrat [traductor] | Freiberger, Marianne. Math squared.
por Lundy, Miranda [autor] | Sutton, Daud [autor] | Ashton, Anthony [autor] | Martineau, Jason [autor] | Martineau, John [autor] | Ribas, Montserrat [traductor].