Fixx, James F. Hodri meydan : Süper zekalar için bilmeceler / by James F. Fixx. - Istanbul : Mavi Ada, 2000. - 191 p. : ; 20 cm. - Bilim 4 Kitap no.10 . - Bilim 4 Kitap no.10 . This book is in Turkish. ISBN: 9758512005 Subjects--Topical Terms: Matmematical recreation.Number games.