RT Article T1 Blut A1 Wißmann, H. A1 Böcher, Otto 1935-2020 A1 Michel, W. A2 Müller, Gerhard A2 Krause, Gerhard 1912-1982 LA German YR 1980 UL https://www.ixtheo.de/Record/1650039336 K1 Blut