"No restrictions on access"@en . . . . "Oral history interview with Heinz Droβel"@en . . "irn518777" . "1 DVD,"@en . . "The United States Department of Energy provided a copy of the interview with Heinz Droβel to the United States Holocaust Memorial Museum on March 2, 2007. The Department of Energy received a copy of the interview from the University of Freiburg, which granted them written permission to send the interview to the Holocaust Museum and make it available there."@en . . . .