Ziogas, Constantine Economics for the IB diploma : standard and higher level / IB study guide Constantine Ziogas - China Oxford University Press 2008 - 158 s. tbl., şkl., res. 30 cm. Lise Kütüphanesi ISBN: 9780199152285 Subjects--Topical Terms: EkonomiIB--EkonomiIB--Economics Dewey Class. No.: 330