Rescue attempts during the Holocaust : proceedings of the second Yad Vashem International Historical Conference, Jerusalem, april 8 - 11, 1974 - Guṭman, Yiśraʾel 1923-2013; ha- Kinus ha-Benle'umi shel Ḥoḳre ha-Sho'ah; Yad Vashem International Historical Conference (Yad Vashem, 1977)