. . "Gau Wien of the National Socialist Party (NSDAP, Vienna): Orders, instructions and individual answers from the Sippenamt (Ministry of Geneology) regarding the research of racial origins"@eng . "Gau Wien of the National Socialist Party (NSDAP, Vienna): Orders, instructions and individual answers from the Sippenamt (Ministry of Geneology) regarding the research of racial origins"@eng . .