10
Published 1974
Other Authors: '; ...Ritter, Gerhard A., 1929-2015...
Book
11
by Kaelble, Hartmut, 1940-
Published 1967
Other Authors: '; ...Ritter, Gerhard A., 1929-2015...
Book
12
Published 1990
Other Authors: '; ...Ritter, Gerhard A., 1929-2015...
Book