McMillan, Dan. How could this happen : explaining the Holocaust / Dan McMillan. - New York : Basic Books, a member of the Perseus Books Group, 2014. - xi, 276 p. ; 25 cm. Includes bibliographical references and index. ISBN: 0465036643 (electronic bk.) 0465080243 (hardback) 9780465080243 (hardback) Subjects--Topical Terms: Holocaust, Jewish (1939-1945)--Causes Subjects--Geographic Terms: Germany--Politics and government--1933-1945.Germany--Social conditions--1918-1933.Germany--Social conditions--1933-1945.