Matematika UBI - Buera, Pedro; Arenzana, Victor; Verge, Carlos; Oñatibia, Imanol; Alkain, Maria Jesus; Carrascal, Begoña; Elhuyar Kultur Elkartea. Matematika Taldea ([Donostia] : Elhuyar, 1982)
UBI
Keywords: Curriculumeko baliabideak