1
by Rosenberg, Joseph
Published 1962
2
by Eckhard-Black, Christine
Published 1992
3
by Hatherall, Dietlinde
Published 2005
4
Published 2005
5
by Russon, L.J
Published 1962
6
by Coggle, Paul
Published 2003
7
by Forst, Gabriele
Published 1995
8
by Durrell, Martin
Published 2002
9
by Taylor, Heimy
Published 1986
10
by Martin, Sigrid-B.
Published 1998
11
by Hatherall, Dietlinde
Published 2005
12
Published 2004
13
by Martin-W?unscher, Sigrid
Published 1995