1
by Lorenz, Konrad, 1903-1989
Published 1990
Book
2
by Franck, Dierk
Published 1996
Book
10
by Lorenz, Konrad, 1903-1989
Published 2003
Book
11
13
by Mündl, Kurt, 1959-
Published 1992
Book
14
15
by Janata, Jaromír, 1931-
Published 1999
Book
16
by Geist, Bohumil, 1927-2006
Published 1992
Book
17
by Dawkins, Richard, 1941-
Published 1998
Book
18
by Lorenz, Konrad, 1903-1989
Published 1992
Book
19