Aysu, Osman, 1936- Casus / by Osman Aysu. - 1st ed. - İstanbul : Yakamoz, 2008. - 280 p ; 21 cm. Turkish. ISBN: 6053840300 9786053840305 Subjects--Topical Terms: Fiction, Turkish. Index Terms--Genre/Form: Dedective fiction.Mystery fiction. Dewey Class. No.: TF AYS