Hamzaoğlu, Ethem İ. Problems for discovering mathematics 2 / Ethem İ. Hamzaoğlu, Ekrem Karamanlı - 1. ed. - Ankara Alfa Publication 1992 - 251 s. tbl., şkl. 23 cm. Lise Kütüphanesi ISBN: 9755190287 Subjects--Topical Terms: MatematikMaths Dewey Class. No.: 510