Remembering the past, shaping the future : Yad Vashem marks its fiftieth anniversary 1953-2003 = Zokhrim et he-ʿavar, mavṭiḥim et he-ʿatid : yovel le-Yad ṿa-Shem 1953-2003 - ʿAmrami, Yishai; Barḳai, Raḥel (2003)