The activities of religious Zionist youth groups in Europe during the Holocaust 1939 - 1945 ; a summarized review of limited archive sources = hap' Peʿîlôt šel qevûṣôt nôʿar siyyôniyyôt dātiyyôt be-Êrôpā bi-teqûfat haš-šôʿā - Knoller, Rivqā (Arnold and Leona Finkler Inst. of Holocaust Research, 1989)