Hamzaoğlu, Ethem İ. Problems for discovering mathematics 3 / Ethem İ. Hamzaoğlu, Ekrem Karamanlı - 1. ed. - Ankara Alfa Publication 1992 - 346 s. tbl., şkl. 28 cm. Lise Kütüphanesi ISBN: 975519018X Subjects--Topical Terms: MatematikMaths Dewey Class. No.: 510