Patterns of Jewish leadership in Nazi Europe : 1933 - 1945 ; proceedings of the third Yad Vashem International Historical Conference, Jerusalem, April 4-7, 1977 - Gutman, Yisrael; ha- Kinus ha-Benle'umi shel Ḥoḳre ha-Sho'ah; Yad Vashem International Historical Conference (Yad Vashem, 1979)